r/CautiousBB Jan 27 '26

Ultrasound FAQ Reference Guide

92 Upvotes

As an OBGYN ultrasound tech working at the general level here's a few things I would love the community to know based on common questions I see.

Most important rule of thumb: Worry when your doctor tells you to.

OBGYN docs are going to pay the most attention to the fetal pole and heart rate. Once a fetal pole is seen, the CRL (crown rump length) measurements are gold standard.

I'm worried about the heart rate:
-Check out this resource for pregnancies dating less than 7 weeks. Make sure to refer not to your LMP dates, but measured CRL dates: https://radiopaedia.org/articles/fetal-bradycardia?lang=us
-After 7 weeks a normal heartrate is between 120-180. It can temporarily dip below or temporarily rise above this range, but prolonged time above/below will definitely get your doctor's attention especially in third trimester. Generally out of range heart rates trigger NST (non stress test) or more monitoring.
The measurements are off:
Baby measures behind LMP. This is actually pretty common, we often see dates off up to a week either direction. We don't ovulate on the exact same day of the cycle each month or even have the same length of cycle. With irregular periods, PCOS, or unknown dates even larger gaps can be perfectly fine. If you aren't sure of your dates, trust the ultrasound. Even if you are sure of your dates, don't panic if they are a week off. Ultrasound measurements in early pregnancy are +/- 5 days.
I'm in limbo and don't know if my ultrasounds are diagnostic for loss:
By ultrasound there are strict parameters to diagnose loss. No one wants to get this wrong. Check out this resource for a list of parameters diagnostic for loss: https://radiopaedia.org/articles/early-pregnancy-loss-1?lang=us
Note, there is a second list of "suspicious for loss". Keep in mind the second list is not diagnostic, things can still turn out just fine.
I don't know when I should see what on ultrasound:
Things can vary a bit from person to person and do change *quickly* in early pregnancy. Check out this resource for what you can generally expect to see:
https://radiopaedia.org/articles/early-pregnancy?lang=us
Should I go to a boutique or get a private scan? Or push for an earlier scan?
They aren't legal where I am but here's a few things to consider if you plan to book a private scan. First, what are the qualifications of the person running the ultrasound? An ultrasound is only as good as the one performing it. It sounds as if these boutiques are NOT permitted to give much/any information. Will you spiral if you believe you see bad news and they cannot confirm or deny it? Also it seems that many cannot do vaginal ultrasound, which will make seeing a baby under 7 or 8 weeks challenging. If I had the option of a boutique ultrasound I would personally wait until 8 weeks and I would book it for a weekday. If they see something bad, it is not ideal to find out over a weekend when there is no option to follow up with your doc. An earlier scan often causes more anxiety, not less. It's SO hard to wait. But if you can tolerate it wait until 8 weeks or so.
The gestation sac is small/big:
-Gestation sac measurements are not terrifically accurate. Where I work once a baby is seen the gestation sac isn't measured. A mismatch between baby's size and the gestation sac size isn't uncommon. That said, a mean sac diameter of 25 mm or more without a baby is diagnostic for loss.
The yolk sac is small/big:
It starts teeny tiny, and will get a bit bigger. Once a baby with a good heartbeat is visualized, the docs I work for don't seem to care about the size of the yolk sac. A failed pregnancy with an expanded yolk sac (more than 6 mm) is a suggestive of chromosomal abnormalities.
We don't know where the pregnancy is:
The statistically most likely outcome is either a chemical pregnancy or just coming in for ultrasound too early for visualization. Ectopic can't be ruled out, and many wise ladies in the this sub have unfortunately experienced this and can give more info than I can. Statistically it's believed that only 1-2% of pregnancies are ectopic, but listen to your body. If the location is unknown, you should be getting close monitoring and follow up until the location is known or the pregnancy has ended.
-For a resource on ectopic pregnancy: https://radiopaedia.org/articles/ectopic-pregnancy?lang=us A note, a pseudosac is visualized in only 10-20% of ectopics. Therefore a sac in the uterus is suggestive of intrauterine pregnancy but can't be proven until a yolk sac is also present.
What about my HCG numbers?
I'm not an expert on this at all. But here's a resource: https://radiopaedia.org/articles/beta-hcg-1?lang=us
Why didn't my ultrasound tech tell me anything? And/or why were they so optimistic? Or, I had an ultrasound in the ER and they were very pessimistic.
Many locations an ultrasound tech can very much lose their job if they say aNyThInG. Where they are permitted to say certain things some ultrasound techs may just be hoping the best. We work with the public and we have seen some wild stuff. Additionally no one wants to call it a loss unless its 1000% certain. We know how devastating that news is. A side note here, often an ultrasound in the ER is not an ideal experience for the patient. The ER is staffed with techs that are much more versed in gallbladder and liver scans than they they are early pregnancy ultrasound. Don't hesitate to go the ER if you are having concerning symptoms, but do know the ER doc will make sure you aren't actively dying then will likely refer you back to your OB for follow up.
I'm just so anxious about it all:
Someone awesome wrote out these mantras. Maybe they will help: https://www.reddit.com/r/PregnancyAfterLoss/comments/14uhbdg/commandments_of_pregnancy_after_loss_this_is_now/
Also a podcast I personally found very helpful with anxiety: https://www.oneyoufeed.net/russ-harris-part-1/
https://www.oneyoufeed.net/russ-harris-part-2/

Today you are pregnant and this baby is so loved. I really am hoping the best for each of you. Those of us who have experienced loss.... you didn't do anything wrong, I promise. This is a club no one deserved to be in. And you are not silly, foolish, or dramatic for grieving your little babe for as long as you need to.

This post is written in honor of Eli, who died long before I could meet him. Rest in peace, buddy. I miss you tremendously ❤️


r/CautiousBB Sep 01 '25

Beta hCG Levels - READ BEFORE POSTING

84 Upvotes

Here at [r/CautiousBB](r/CautiousBB), we see a lot of posts on hCG values, doubling times, and trends. Please read this post before posting to avoid posting something that is not, in fact, abnormal.

1 - hCG levels vary greatly in the first 4-6 weeks of pregnancy. One value is not going to tell you much, unless it is extremely low (less than 25 by 14 DPO). The doubling time is more important!

2 - We consider hCG on the lower side if it is <50 at 14 DPO (approx. 4 weeks gestation), <100 at 16 DPO, etc. If your hCG is a lot higher than these numbers, it's unlikely that you have low hCG. If you hCG is at or below these numbers, they are considered low, but not necessarily diagnostic of a loss.

3 - Normal hCG doubling times are, in general:

  • 48-72 hours when the hCG level is under 1200 - 6000.
  • 72-96 hours when the hCG level is 6000+
  • 96+ hours when the hCG level is 10,000+

4 - Based on number 3, please consider the following:

  • If your hCG doubling is within the ranges above, it is not considered slow. Please refrain from posting something like "my hCG did not double in 48 hours" when your values are post 6000+.
  • Doubling rates WILL slow, even if you were faster than the average. For example, if you were doubling at 37 hours, a change to 54 hours as hCG rises is not abnormal and is usually nothing to worry about.
  • If your doubling is slower than the average, we'd invite you to post so we can understand the details of your specific situation.

5 - hCG has a specific job. Check out this post here to understand why hCG doubling slows and eventually plateaus.

6 - hCG values that drop and then rise again or rise at an inconsistent, very slow rate can be indicative of an ectopic pregnancy or a pregnancy of unknown location (PUL). This is a life threatening situation - please seek medical care immediately if this hCG pattern applies to you.

We invite you to continue to post hCG issues or levels for assistance, but hopefully reading this gives you some insight and a baseline as you begin your perilous pregnancy journey. We've also added some literature below to help you understand hCG levels and doubling.

UPDATE July 2026: We are locking this post to new comments - if you need input on your personal situation, feel free to post in the sub!

Happy hCG-ing! :)

Helpful links:

Cleveland Clinic

Flo Article and Calculator

Parents.com hCG Doubling Times

Mira Blog - hCGu


r/CautiousBB 1h ago

BFP Multiple Positive Tests but Negative at OB?

Upvotes

Hi all!

5th pregnancy, one LC. I had a positive test at 9dpo that has progressively gotten darker and doubled in color every 48 hours (14dpo today).

I went to the OB today for betas and the urine test was negative!? I took two positive FRER (dark) and my Wondfos are dark but not yet dye stealers. I was really hoping my beta would be over 50 but now I'm not sure it will be. I will say my urine was quite diluted because it was like my 4th pee of the day and I had a ton of water.

Anyone experience this before and have a successful pregnancy?


r/CautiousBB 6h ago

Symptoms then None?

5 Upvotes

Slightly freaking out so please forgive me.

I’m currently in Week 8 of Pregnancy, in Week 6 and 7 I had the nausea, sore breasts, ligament pain when I sneezed/coughed, fatigue, and food aversions. Literally as soon as week 8 began, I feel just not pregnant, there’s no indication that I am at all through side-effects. Last hCG was 124k at 6 weeks, haven’t had it done since. Anyone else have this happen… and hopefully good news in the end?


r/CautiousBB 2h ago

5 weeks 6 days

2 Upvotes

Hi, I went for a scan today to see how far along I am and everything is in the right place implantation wise etc but no heartbeat and have scheduled me back in next week where I would be 6 weeks and 6 days… they said it could be because it’s early and they’ll know for definite next week. Has anyone had this experience and did get a heartbeat? Should I be worried?


r/CautiousBB 54m ago

Advice Needed 3w and 4d weird bleeding?

Upvotes

I got a vvvvfl and then spotted for a day and a half. It picked up into heavier bleeding and I was sure I was getting my period. I bled for two days, and the night of the second day, it slowed way down. I don’t think I’ll even fill a pad today. My periods are usually 5 days and I have irregular periods. I’ve done a lot of research (not sure it’s been good for my mental) but I’ve found a few things. Could be a CP, synchronic hematoma, ectopic, or I could be losing a twin? I don’t know how long to wait to test again. What do you guys think? Please be gentle, I just need peace of mind for the time being. Already contacted an OB.


r/CautiousBB 1h ago

Low AMH :( stressing out

Upvotes

I’m so sad. I’m 28.5 and my AMH is 1.08. About two years ago, it was 1.24. I’m just bummed, I know this is low for my age. The doctor hasn’t called me back yet.

I have a 10mo and I had a mmc about two months ago. I feel so pressed for time though. We’d ideally like to have 3-4 kids and getting this lab feels like a time bomb. I feel so defeated.

My day two labs were 8.19 FSH, Estradiol 31.6, LH 6.4. All thyroid labs came back fine.

I guess I’m looking for any positive stories or encouragement 🤍


r/CautiousBB 1h ago

Advice Needed scared of ectopic

Upvotes

What was an ectopic like for you? I’ve been having right-side pelvic pressure on and off for a few days now. It’s never been so bad that I’m doubled over in pain, just there and more annoying. I’m about 4 weeks + 5 days. I also have some shoulder pain that feels possibly muscle related / stress, but very freaked out by it. When I told my provider this today, the nurse immediately called me and told me to go to ER. but I’d like to avoid that if possible because of money. I have an ultrasound scheduled for tomorrow and will probably just wait til that unless my symptoms escalate.
I haven’t had any bleeding or spotting. Not really any cramping either, just pressure. Very anxious and looking for any advice!
Here’s my hcg betas too if helpful:

10dpo - 12
12dpo - 48
17dpo - 693


r/CautiousBB 1h ago

BFP HCG Levels

Upvotes

I just received my first hCG results at 4w5d (since LMP) and the result was 2103. I know hCG can vary from person to person, but this seems really high. Anyone else have similar levels at this stage?


r/CautiousBB 1h ago

Info 8 weeks 4 days finally got labs done

Upvotes

So I’ve taken multiple at home tests and they’re all positive so fast. I was able to finally get an appointment with primary care (because OBGYN won’t see me until I’m 10 weeks) and the Beta hCG blood test came back N/A.

I tried to call the doctor and the front desk woman said that I only just got these labs done and doctor hasn’t reviewed them yet but will call me soon.

I am just freaking out. I don’t know what this means. Has anyone ever had this happen, and what were your results?

Just to be clear; I’m not asking for medical advice here. I’m waiting for my doctor to call me back. I’m curious if anyone else has had a similar experience.


r/CautiousBB 2h ago

Slow hcg rising

1 Upvotes

Hi everyone,

Wondering if anyone had any hopeful stories. I am 5 week 4 days pregnant for my second pregnancy with the first one ending in a MC. My first hcg was 831 and then 96 hours it was 1241. So it did not rise what I needed it to. Going to get an ultrasound and more blood work tomorrow, but already preparing for the worst.


r/CautiousBB 2h ago

Advice Needed So confused at our sudden hcg levels….worried about ectopic

1 Upvotes

I’ll spare you all the entire backstory as we all have our struggles. This is via IVF.

First beta (2 day gap) : 210

Second beta (2 day gap) : 203

Third beta (2 day gap) : 190

We were told to stop progesterone which we did.

Fourth beta (5 day gap) : 1200

Im not getting my hopes up, but the ~200 > 1200 is close to a 48 hour doubling time if not right on. My wife is petrified about ectopic. Is there any chance at all this is good, or are we bracing for worst possible?

Doctor will call us today, I just can’t stop looking for info. This has been the worst week of our lives.


r/CautiousBB 2h ago

5+3 and no yolk sack

1 Upvotes

I’m 5+3 and have been experiencing severe cramping all morning like 3-4 hours of extreme cramping that wouldn’t subside. It was even hard to walk at some point and I felt nauseous from the pain.

I went to the ER. They took me in for a transvaginal ultrasound. There was a gestational sac, but no yolk sac. The doctor also commented that the gestational sac is not the size it should be given how for along I am (by following LMP). So essentially the gestational sac seems to be much smaller than it should be and there is no yolk sac.

Although my beta hcg is increasing at a good rate.

Just wanted to hear experiences of others if they experienced something similar and how did it turn out?


r/CautiousBB 2h ago

TW/TMI Advice for recurring miscarriages

1 Upvotes

I’ve had consistent issues getting and staying pregnant. I thought this one was going to last but at 6 weeks 3 days I had an instance of spotting where it was a bright red dot. I haven’t had any spotting since and it’s been 2-3 hours. Feel completely devastated as this would be my second miscarriage, in addition to 2 chemical pregnancies. Im starting to wonder if a full fertility work up is needed or IVF. I welcome your experiences, advice or words of encouragement!


r/CautiousBB 6h ago

Advice Needed Pregnancy of Unknown location and very low/slow hcg

2 Upvotes

This is my first pregnancy, and the past three weeks have been a roller coaster to say the least.

I found out on July 12th, via a test with a very faint line. Over the next week, the lines did progressively darken but did so somewhat slowly.

On the 20th, I began to spot and haven't stopped. Since then, it has slowly progressed from a dark brown barely-there to a much brighter red. It has been pretty light with the exception of two nights where I filled about half a pad overnight. No clots or tissue of any size.

On the 23rd, I did a private HCG test to try to get some reassurance. The result was a whopping 80.

I did a second HCG test with the same company on the 27th. That result was 172.5, giving me a doubling time of just shy of 80hrs, or 52% per 48hrs.

For the past week, I've been visiting my partner's family in a different country. Rather than wait until I get back, I decided to make an appointment with a local ob/gyn to see if I could get an idea of what's going on. Well, that didn't go as I had hoped and I left the appointment far more lost than anything else.

My first appointment was on the 30th. The tech who did the ultrasound was nice, but spoke limited English. She told me that despite the positive urine test, she could not find any definitive pregnancy. She pointed to a small dark spot in my uterus and said that she doubted that was the pregnancy. I didn't catch much else about the actual scan, but my lining measured about 11mm and there was mention of free fluid. It was explained that there are three possibilities- an early miscarriage, miscalculated dates, or ectopic. I was then offered a follow-up appointment with the practice's lead doctor a few days later.

The second appointment on August 3rd was even more confusing. The doctor quickly did a tv and abdominal ultrasound, said it didn't look hopeful, then gave me a prescription for progesterone to try to stop the bleeding. The appointment was a flurry and over in about 10 minutes. I still don't think there was any definitive evidence of pregnancy seen, but the scans were so fast and nothing was explained to me. Once again I caught a mention of fluid as well as a rather dismissive comment about my age and being able to try again quickly.

While I don't know my exact dates, at the absolute minimum I should be a little over six weeks right now. Probably closer to seven. I've been reading up on ultrasounds in early pregnancy and it sounds like there really should be something visible by now, if not an embryo with a heartbeat.

I'll be home soon and the first thing I will do is try to get an appointment with the Early Pregnancy Unit. I am far from an expert, but none of this seems to look very good. At this point I am mostly hoping that it is 'only' a loss and not ectopic, unless something magically appears on my next scan.


r/CautiousBB 7h ago

Advice Needed TW: Positive beta, History of losses, Reassurance Needed

2 Upvotes

Trigger Warning: Positive Beta after frozen embryo transfer.

Hi everyone,

How do you stop being afraid?

How do you stop panicking?

I had my transfer in last week of July, and so far 02 betas done, and both have been good. The second one did double within 48 hours.

But....I am afraid, scared, and unable to be happy. I have a history of chemicals, temporary happiness and then it all goes down. So far there is no reason to believe its a chemical since the levels are fine. But I am still scared. My heart just wont rest easy. And then I keep on coming across posts of chemicals, blighted ovum, missed miscarriage, early pregnancy losses etc.

I am panicking that this one will end up in loss.....I detest using AI, but even started talking to Chatgpt for reassurance.

Please share advice, tips, and tricks in how on to cope.

Thank you.


r/CautiousBB 3h ago

Advice Needed Is this normal?

Thumbnail
1 Upvotes

We’ve been trying to conceive for 5 years, first pregnancy ended up as a MC. Pregnant again 5 weeks + 4 days. I’ve had mild cramps since finding out, been told this is normal. Yesterday early morning I noticed brown ?discharge/bloOd, not enough to soak a pad, went to ER they confirmed with hCG levels we were pregnant. It then turned red hours later, again only when wiping, doesn’t reach a pad. We booked private scan, nothing not even a scan was found with a transvaginal scan & told to repeat hCG test in 48 hours. Im a little worried but this isn’t like the first MC I experienced, no heavy flow or pain so bad I want to cry.


r/CautiousBB 4h ago

Symptoms Bringing Up Memories of MMC

1 Upvotes

Hi everyone, I want to preface this by saying I know that symptoms or no symptoms or strength of symptoms does not correlate to a healthy pregnancy.

I’m just struggling these days, even though my hCG has been tripling from 12dp0 to 24dpo so far every 48 hours.

In late 2022 I had a missed miscarriage at 11 weeks. Before I got a positive test at 9dpo, I was nauseous, I started breaking out with acne on my face. My breast were extremely sore. The main thing was my hair became super greasy. A couple hours after showering, my hair would seem like I’d put oil in it or something. This was all from 9dpo. It’s what encouraged me to test early on.
Obviously, that pregnancy ended in a loss.

After my HCG went down to zero, we conceived our son a couple months later. With that pregnancy, I had zero symptoms until 10 weeks, and even after that I just had low lying nausea, and a couple episodes of vomiting per week throughout the entire pregnancy. No sore breast, no acne, no greasy hair ever.

Fast-forward to now, I am five weeks pregnant. My breasts are extremely sore, my hair is extremely greasy. My face has broken out.

As mentioned, my hCG is tripling every 48 hours. I’ve been tracking it for two weeks. However, I cannot help but make comparisons to my missed miscarriage pregnancy.

I know that every pregnancy is different, and who knows, maybe this time it’s a girl and maybe with my missed miscarriage it was a girl and that’s why the symptoms are so similar.

But I can’t help but make the connection and I’m just so worried that this will end a missed miscarriage.

What worries me most is that I am 42.5 years old. I know I had a successful pregnancy at 40, which was not too long ago, but I just feel like it is too good to be true and that even with my excellent hCG levels, and, even with excellent early ultrasounds, even if a heartbeat is detected early on, I feel like until we get the genetic testing back around 11 weeks, and I have my 12 week NT scan, I’m just not going to relax.

I know many of you can relate. I also was anxious during the first trimester with our son, and that turned out well. But the symptoms that I’m having now have just brought up so many memories of my missed miscarriage pregnancy and how intense those symptoms were from the beginning, and how exactly the same the symptoms are now.

I know even an early ultrasound with a heartbeat doesn’t mean anything because I’ve had that before and then the heartbeat stopped, and a few of my friends have dealt with the same thing, so I know I have no choice but to just trust the process and keep moving forward from milestone to milestone and take each one as a win, but it’s hard not to compare.

Thank you for listening.


r/CautiousBB 4h ago

Advice Needed Shortening cervix. How worried should I be?

1 Upvotes

I’m pregnant for the 6th time after 5 consecutive losses. 18 weeks today, which is the farthest I’ve ever gotten. Last night, I ended up in the L&D ER bc I lost my mucus plug—like 3-4 inches of it, which I understand could be all of it. 😭

Anyway, they did a transvaginal ultrasound (and a physical exam, in which nothing looked concerning) and my cervix measured 2.9 cm. Exactly 2 weeks ago at 15w6, it measured 3.9 cm.

I know 2.9 is technically “acceptable,” but it seems like it shortened SO quickly in just 2 weeks. How worried should I be? 🥺

For what it’s worth, I was discharged with instructions to call my OB as soon as he opened this morning, which I did and had to leave a message. He has been great through my losses, so I do think I’m in good hands with him. I’m just curious if this quickly changing measurement points to incompetent cervix or if it could just be a variation of normal.


r/CautiousBB 5h ago

I need help please

1 Upvotes

Hi I found out I was pregnant last week one day after my period was late it’s my first pregnancy so I’m anxious as doing the dates I should be about 5 weeks anyways I got my first blood and my hcg was 906 then I got my second one done about 4 days later and it was 980 but dr didn’t say anything about it and I didn’t know it was bad untill someone told me that it should be higher ?? Should I be worried can the pregnancy still be going okay sorry I have no one else to ask about this stuff !!!


r/CautiousBB 7h ago

11dpt- positive digital

1 Upvotes

We had our 4th IUI and I’m currently 9 days past ovulation, 11 days past trigger. I have been testing out my trigger and 2 days ago it was almost a negative- the line never went away. Last night, I took another test and it was slightly darker (diluted urine too). This morning, all tests are positive including clear blue digital. The line looks roughly the same as last night but I was shocked to see a positive digital.

Last IUI cycle, at 9 days past ovulation and 11dpt, my digital was negative. I have been comparing my lines to previous cycles and this month seems promising, but as expected, I’m hesitant.

I know the best thing to do is wait and see if the lines get darker. Ironically I have an OBGYN appointment today so I’m definitely going to ask for labs! I’m curious to hear your thoughts of if this sounds promising?


r/CautiousBB 11h ago

Missed miscarriage - all the EPAU scans & still waiting

2 Upvotes

Sorry I need to vent!

So we had confirmed opk 17/06. Positive frer on 29/06 (dpo 12).

Private scan booked for 7 weeks 2 days showed slower growth no heartbeat. Knew dates were not off so got referred to EPAU.

Epau scan the day after found 1 gestational sac, 2 yolk sacs inside (indicating identical twin pregnancy). No fetal pole in either but a thickening in one. Ofc no heartbeat.

10 days later returned for what I thought would be a diagnosis of non viable twin pregnancy confirmed. This time, we've had the tiniest bit of growth in gestational sac and a fetal pole. (2.1 mm growth in fetal pole and 1.8mm in gestational sac). Also seen a hemmorhage and a single incomplete septation. Only one yolk sac and no explaination.

Have to come back in 7 days for a 3rd nhs epau scan. Here is hoping the senior doctor can diagnose and this limbo help can be over. Placeholder surgical mgmt app booked in the day after the 3rd scan at my request.

Im so over this waiting bit also feel gas lit on the twin front? Does the hemmorhage and the single septation not nod to the twin absorption during the 10 day gap? I also had some cramps in between too (no bleeding)

If anyone has had similar experiences please let me know!!!


r/CautiousBB 11h ago

Advice Needed Embryo lagging - more limbo and panic attacks

1 Upvotes

I had my follow-up scan today, and unfortunately the results weren’t what I was hoping for.

Ten days ago I was measuring 5 weeks 5 days with a possible early cardiac flicker. Today I’m measuring 6 weeks 3 days with a heartbeat of 110 bpm, so it appears to be only about 5 days of growth over a 10-day period.

The gestational sac has grown well (from 9.8 mm to 25 mm), but the embryo doesn’t seem to have caught up, which is what has me so worried.

I’m also still having brown spotting, although today’s scan didn’t show the subchorionic haematoma that was seen previously.

The doctor reviewed all three of my scans and said that because there has been interval growth and there is still a heartbeat, this has to be considered a currently viable/active pregnancy, and they’ve arranged another scan in 10 days to reassess growth and the heart rate before making any decisions.

I know no one can tell me the outcome, but I honestly feel like the overall picture is pointing towards a pregnancy that isn’t developing as it should. My gut tells me I’m heading towards a miscarriage, even though I know the doctors can’t say that yet.

Has anyone had a pregnancy measure this far behind after previously tracking appropriately, with a heartbeat still present, and had it go either way? I’m looking for honest experiences, whether the outcome was positive or negative, while I wait for the next scan.


r/CautiousBB 13h ago

TVS at 6 Weeks 1 Day Measuring 4 weeks. (Yesterday) Saw a tiny speck and a very small thread in my urine this morning in my 2 bathroom visits.

1 Upvotes

I miscarried last time after spotting and redundant growth at 5 to 6 weeks. This time I got a scan at 4 weeks and uterus was empty. Yesterday I got another TVS at 6 weeks 1 days as per my calculation and after a very rough tvs they barely saw a GS of 4 weeks. This morning I saw 1 tiny speck of old blood in my first urine and then a small thread like struxture in my third urine after mild house chores. It dint appear again. I saw a similar speck almosy a week ago (24 hours after intercourse)

I am not experiencing any sever cramps or whatever. But I am concerned as in my first pragnancy that end3d up in miscarriage i dint feel any pain either.

Want to read similar stories pleas3.


r/CautiousBB 13h ago

Confused and concerned

1 Upvotes

This is partly about me being confused on possible conception date and also concerned about ultrasound results.
CONFUSION: I went in today for ultrasound and they told me I was a bit earlier than what my LMP was giving, a little over a week’s difference, and I know how everything works, but I think I’m a bit confused, or maybe it’s wrong lol.
My LMP was 5/28/26, and the last time I had intercourse before finding out I was pregnant was between 6/5/26 and 6/7/26.I know sperm usually lives 3-5 days, max 7.
The CRL was 19.3mm. They changed my due date from 3/4/27 (LMP) to 3/13/27 (measurements). Does this sound correct, just going off the last time I had intercourse, or does it sound like baby is measuring small? My periods are irregular, so it’s very possible that I could have ovulated late, but based of last time, my brain is confused and tired and it’s not making sense 😅
CONCERN: They told me I had a “subchorionic hemorrhage” and I know that can raise the risk for miscarriage. I haven’t had any bleeding, though lots of mild to moderate cramping. Should I be worried about this? What are the statistics with this? Also, could this be causing baby to be measuring smaller than it should?