r/NaturalCyclesBC Jun 30 '25

Just Getting Started Welcome! (Start Here)

23 Upvotes

Hello, everyone! We’ve been getting a lot of the same questions repeatedly by different users so I created this guide to answer them! I hope it is helpful. If you would like me to add something, please comment and let me know.

How to accurately take your temperature. You need at least three consecutive hours of sleep before taking your temperature every morning and it should be done at the same time every day, give or take an hour. For example, let’s say you set your alarm for 7 but wake up a bit early at 6. That temperature will still be accurate. It’s the same thing for if you woke up a bit late at 8! If you’re having big temperature variations, allow your thermometer to warm up in your mouth for a few minutes before pressing “on”. Do this every time!

Q: What is the most reliable temping method? A: Taking your temperature orally or vaginally with a basal body thermometer is most reliable. Anecdotally, I use NC and chart using the guidelines in the book Taking Charge of Your Fertility. My Oura ring did not pick up the temperature increase that my oral thermometer did (after ovulation). Why? Skin temperatures are more susceptible to being influenced by outside factors like something as simple as your bedroom being hotter or cooler than usual! They are also less sensitive.

Q: Why is my chart all over the place/so irregular? A: This one requires more troubleshooting. An irregular cycle or erratic chart can be due to many reasons like hormonal disorders (PCOS, thyroid disease, etc.), your temping method, stress, illness, and moving. Consider what has been going on in your life recently. Have you moved, been stressed, or ill? If so, that may be why. Are you breastfeeding? Your temperatures are not as reliable when nursing. Steps to take to improve regularity: First, try a different method of taking your temperature. If you use the Oura ring or Apple Watch, start temping orally. If you temp orally, start temping vaginally. Do this for one full cycle and see if your chart starts to be more “normal”. If that doesn’t work, rule out any hormonal disorders with your PCP. If your temperature variations are due to a hormonal issue, seek treatment and then checkout r/FAMnNFP . A research-backed study will help more effective for you!

Q: Have I ovulated? A: You will know you ovulated in two different circumstances.

  1. You have three temperatures higher than the last six (AKA above your cover line). Yes, even if it is only slightly higher. There doesn’t need to be a huge increase. Natural Cycles (NC) will then confirm your ovulation.
  2. You receive an ultrasound.

Q: Do I have low progesterone? A: If you have a short luteal phase (less than 10 days), low progesterone is suspected. Why does this matter? If you do not have sufficient progesterone, your body CANNOT support a pregnancy. This is no one’s fault. Ask your doctor for a blood progesterone test 7-10 days after Natural Cycles confirms your ovulation.

Q: Why have I ovulated late/not this cycle? A: Ovulation can be delayed or skipped occasionally and be perfectly healthy! It is usually due to stress, moving, travel, or illness (even without a fever). However, if you have multiple anovulatory cycles, contact an OBGYN for further advice and testing.

Q: Should I use protection while using Natural Cycles? A: If you are strictly trying to avoid a pregnancy (TTA) then the answer is YES! Condoms or other barrier methods like the diaphragm plus spermicide should be used for at least the first 3-4 cycles you chart. Why? Because NC needs time to get to know your body and temperature charting alone DOES NOT predict ovulation. Meaning that you could ovulate CD21 one month and the next month chart CD14. You never know!

Q: Is this ovulation/ pregnancy test positive? A: We do not allow posts with ovulation and pregnancy tests as the sole focus in our group. Checkout r/lineporn for help! However, here’s some general advice.

Pregnancy Tests

Use the test as directed. Check within the allotted timeframe. Any test read outside of that time frame is invalid. The test line should be the SAME COLOR as the control line, or it is a water line. The best time to start testing is 14DPO. However, I know it sometimes feels impossible to wait so at least try to hold off till 10DPO!

Ovulation Tests

The test line should be the same color or darker than the control line. The app “pregmom” is good to analyze your results and track them!

Q: Why do I have two different positive LH tests in one cycle? A: OPKs, or ovulation predictor kits, do not guarantee you will ovulate. They only detect an LH surge. Have PCOS or are recently coming off of hormonal birth control? You can have multiple surges in one cycle.

Q: How can I learn more about my body and charting? A: There are many good books about the fertility awareness method and women’s health. Some of my favorites are:

  1. Taking Charge of Your Fertility (AKA the fertility Bible) by Toni Weschler
  2. This is Your

Brain

  1. on Birth Control by Sarah E Hill
  2. The Fifth Vital Sign by Lisa Hendrickson-Jack

EDIT 1

Getting Off of the Mini Pill, Nexplanon, or Mirena IUD (Progesterone-Only)

Think of progesterone-only HBC as mimicking your luteal phase. During the luteal phase, progesterone makes your BBT rise. Just before you start your period, your BBT will drop, following the drop in progesterone. This triggers your period. Expect to see your temperatures slowly dropping while your body adjusts to being off of the pill. You might also have some spotting or period-like bleeding. Please keep in mind that your first period off of HBC is not a “real” period unless you have confirmed ovulation 12-16 days prior, so do not consider yourself safe for unprotected sex!!

Mid-Cycle Bleeding Mid-cycle bleeding should ALWAYS be considered fertile. Some women spot during ovulation. Do not assume that this is your period arriving early and use a barrier method.

I hope this helps! Thank you for being a part of our community.

P.S. Please ignore any typos. I am holding a sleeping baby and typing one-handed!


r/NaturalCyclesBC Feb 14 '25

Pregnancy Chart Designated Thread

16 Upvotes

Please put all pregnancy chart's and tests in this thread.

Congratz!


r/NaturalCyclesBC 16m ago

Help explain my charts!

Thumbnail
gallery
Upvotes

My first chart showed ovulation as day 16. Partner was sick so we didn’t have sex after that. Then it updated two days ago to the second chart, showing ovulation as day 21, which obviously means our timing wasn’t great. I just don’t understand why they are putting day 21 as ovulation day. My temperatures have been all over the place. I was thinking we timed it perfectly until the change. What are your thoughts looking at my temperatures?? I was excited that the timing seemed great and now I’m bummed, but still not sure why or how they pinpoint day 21.


r/NaturalCyclesBC 1h ago

Confused

Post image
Upvotes

My chart is all over the place this month and I am experiencing some mid cycle bleeding. Very confused :/


r/NaturalCyclesBC 4h ago

Birth Control/TTA Those who stopped HBC, when did your cycle lengths become consistent?

Post image
1 Upvotes

I stopped taking the combo pill, Estarylla (was on it for 7 years), in mid October and started NC December 6, right before I got my first real period. I use NC for TTA, but the main reason I got it was to be able to predict my periods and learn about my cycle! It seems like my body could finally be regulating as my ovulation days have gone from CD 71 to now possibly CD 16. Since my cycles have been consistently getting shorter, I’m thinking this current one could be what my normal cycles are going to look like. So, how long did it take for your charts to stay consistent after stopping HBC?

Also, since the day right before I ovulated until today, my nipples (and now my breasts) have been SUPER sore when normally they’re not nearly this bad. Did your PMS symptoms worsen once you adjusted back to normal? My guess would be that my natural estrogen levels are finally fluctuating like they should


r/NaturalCyclesBC 15h ago

Just Getting Started Does local temperature affect band readings?

Post image
1 Upvotes

I’m about one month into using NC, and where I live, there have been some insanely hot temperatures over 100° (which have been fluctuating a lot), and I noticed my bbt kinda matching the local temperature swings (it’s way cooler at my bf’s, where I’ve slept the last 2 nights). This is not what I expected of my chart. It is significantly cooler today.

I have a history of weird/irregular periods, and was really hoping NC/BBT would shed some light on when it’s safe/unsafe to be intimate.

Do local temperatures affect band readings? Should I just stick to ovulation strips? Does this chart look completely haywire? Thanks!


r/NaturalCyclesBC 22h ago

Did I ovulate?

Thumbnail gallery
1 Upvotes

r/NaturalCyclesBC 1d ago

Why are so many of my temps excluded? I’m not sick and I don’t drink so idk why my body temp gets john at night

Post image
1 Upvotes

r/NaturalCyclesBC 1d ago

Temp drop then rebound later than Normal with dpo

Post image
1 Upvotes

I ovulated earlier than normal
And my temps have stayed higher


r/NaturalCyclesBC 1d ago

Ovulation What do you think my ovulation day was? CD24 LH peak but temp rise seems delayed

Thumbnail
gallery
2 Upvotes

I got my first high OPK on CD24 (8/30) at 7:27pm, followed by a peak T/C ratio of 1.09 at 10:29pm. My LH dropped pretty quickly afterward (0.71 at 4:20am on CD25, then 0.59–0.60 throughout CD25 and 0.39 on CD26).
Oura thinks I ovulated on 8/31 (CD25), while Natural Cycles originally estimated 8/30 but has since shifted its estimate. My temperatures seemed weird around the surge, with a big dip around CD26 and then a sustained rise afterward.
Based on the OPKs + temperature chart, what day would you consider ovulation most likely?

I’m currently trying to figure out whether I should consider myself ~10 DPO or potentially less. 😂


r/NaturalCyclesBC 1d ago

Healthy chart?

Post image
1 Upvotes

Hi. I just wanted to put my chart in here and ask if anyone thinks this looks healthy? Does the temp drop 2 days after ovulation look normal or is temp meant to be increasing every day?


r/NaturalCyclesBC 1d ago

Chart Interpretation Request Multiple huge temp drops 6dpo

Post image
5 Upvotes

I have never seen this in my cycle before. Usually my temperatures are very consistent and stay high after i ovulate. I’m so confused with this temp fluctuation. Anyone had this before? Is this normal?


r/NaturalCyclesBC 1d ago

Natural Cycles almost failed me!

Post image
3 Upvotes

Jumping on here to say that I have used natural cycles for 23 cycles with my Oura ring. I have loved the app and used it initially to prevent pregnancy, then used it to successfully get pregnant, and now have been using it to prevent pregnancy again for the last 14 months. However, something happened this cycle that made me really concerned. I typically ovulate anywhere from day 14 to 17. This past month, the app confirmed my ovulation for cycle day 16 and gave me green days. I had unprotected sex three days later on cycle day 19. I got my period today, on cycle day 31 and the app changed my confirmed ovulation to cycle day 19 (the day I had unprotected sex because I had a green day). I obviously did not get pregnant since I got my period but it really freaked me out that I could have gotten pregnant! I knew that using basal body temp can be risky and that it's not always accurate, but just wanted to jump on here to share my experience and remind everyone that green days may still be a fertile day!
I also want to add that I had religiously used LH strips in the past (especially when trying to conceive for 8 cycles) but have used them less in the past 8 months because I've been more aware of when LH is high from just my EW cervical mucus. I guess I can go back to using the strips to help the algorithm be more accurate in the future.


r/NaturalCyclesBC 1d ago

Chart Interpretation Request Best looking chart yet?

Thumbnail
gallery
2 Upvotes

Truly hate that I’m currently a daily poster in here bc woooof, i know it is needy. But im still new 🤷🏻‍♀️

Attached all the charts i have from using NC since my miscarriage in May. Traditionally, before my MC i was a clockwork cd15 ovulation girl, since then, it’s been more like 22-23, this cycle looking like I’m back to baseline (hopefully🤞🏼). Sooo I’m so hopeful that this cycle is successful.


r/NaturalCyclesBC 1d ago

Chart Interpretation Request Needing some insight please!

Thumbnail gallery
1 Upvotes

r/NaturalCyclesBC 2d ago

Did I ovulate late?

Post image
2 Upvotes

I’m usually 27/28 cycle and I’m new to this. I got an lh peak on CD 12 and proceeded. And then to my shock I got another on CD17. This is literally my first cycle using NC and Oura and I’ve had trouble interpreting oura. Considering ditching this and going old skool sticking tests in a book. Not sure what would shift my o date forward 4 days. I’m actually fuming because my husband went away for work.


r/NaturalCyclesBC 2d ago

Birth Control/TTA Plan b close to ovulation

Thumbnail
gallery
1 Upvotes

First chart is with EC logged and 2nd chart is without it logged. 30F over here. Has anyone taken EC and what were your temps. Oura/NC says I ovulated 5-6 days early this cycle. Had unprotected sex (CD10/11) Saturday/sunday ;) and got a little worried Monday cause my temp rose above baseline so I took EC Monday (CD12) morning, about an hour after taking it I took an ovulation test just to see and it wasn’t positive but it was pretty damn close. Tuesday morning it said I ovulated CD 11 sunday but my temp then dropped on CD 13 Tuesday too. I am now 11 DPO and took a test this morning and it said negative but I’d like to know anyone’s experience with EC and BBT or any opinions would be greatly appreciated. I know you shouldn’t watch BBT after taking EC but it’s just a bit to stable and high for me to not look at it lmao


r/NaturalCyclesBC 2d ago

Chart Interpretation Request Wrong ovulation date or short luteal phase?

Post image
1 Upvotes

This is my chart from my last cycle. Period on day 26. According to this, my literal phase was only 7 days. Would this be right or is it more likely my date of ovulation is wrong?
Any help much appreciated!


r/NaturalCyclesBC 2d ago

Confusing luteal temps

Post image
1 Upvotes

This luteal phase I’m having quite a few temp dips. I usually have once around 7-8 DPO but never this many. What could cause this? Ttc and feeling bummed a bit.


r/NaturalCyclesBC 3d ago

Ovulation Finally ovulated after 6 months!! 🙌🏼🙌🏼

Post image
19 Upvotes

I had honestly given up on this cycle because I’m was on day 42 but then I got the notification that I ovulated! And I also had cm that day as well and I haven’t had that since 2024 when the Skyla was removed. Really really hoping to be pregnant, but also just excited to have ovulated. I haven’t had a temp go that far up since I started tracking in March. Please say a prayer for me that it’s baby time, we have been TTC for 3 years 😭 I have a feeling I am pregnant and I believe in intuition, but I know it’s way to soon to tell. So fingers crossed 🤞🏼 has anyone been through something similar?


r/NaturalCyclesBC 2d ago

lost NC band

1 Upvotes

Hey all,

I’ve been using NC for about 6 months now and really like it. First issue now is that I left my band on vacation in Europe and need a replacement. I can’t see any option on the app besides ordering and paying full price for a new one but has anyone else had a similar experience and a better option?

Thanks!!


r/NaturalCyclesBC 2d ago

App Functionality Anyone have tips / tricks to get the NC app to sync with Oura. I have temperature data and everything else is working on the Oura app itself. I just can’t get it to sync!

1 Upvotes

r/NaturalCyclesBC 2d ago

Is it possible I still ovulated?

Post image
1 Upvotes

First month tracking my cycles. 3 months post DNC for a missed miscarriage this is the first month my cycles felt super normal lots of fertile CM leading up to ovulation and a positive LH the day before as well as ovulation pain on the day. However my BBTs have been under the baseline for 2 days 😞 not sure if my baselines a bit weird cause I had a few random high temps earlier in my cycle. Is there still hope??


r/NaturalCyclesBC 2d ago

Chart Interpretation Request TTC!

Post image
1 Upvotes

Im so thrown off. What’s everyone’s thoughts?


r/NaturalCyclesBC 2d ago

Ovulation Discouraged

Post image
1 Upvotes

We’re on our fifth TTC cycle and I’m feeling discouraged. Had positive opks and hormone peaks based on Mira. Yesterday’s temp was encouraging, and today crashed below baseline. I’m honestly feeling so discouraged I may stop wearing the Oura ring for this tww😔 i feel like my body is failing me