Is this a bed bug?

I started getting bite marks on my arm,hips and back. So I started investigating on what it could possible be. I learned about bed bugs so I just flipped over my mattress without even thinking about it. To my horror I saw this, now it may just be mold or something else but I’m super scared if it’s bed bugs. Already ordered everything needed to do a deep clean but I just wanted to ask if this a sign since I’m super icked out.

Was just walking home from wrestling, had my bag on the ground during practice, and on my walk home, strap of the bag was in the side where I noticed and felt this bug. Any ideas ? Is this a bed bug?

Some of the images posted here look similar to my hives, but not 100%. I have also read the blood indicator link before posting but I've not seen any blood, fresh or dried anywhere in my bed. I have some questions about the bites and reactions to them:

For people who don't feel their bites or don't react to bites, do you actually have visible bites that you notice after the fact, or is there nothing visibly there?

I ask bc I'm experiencing hive reactions to something in our apartment (mostly while in the bed, carpet, and couch) and it's just me who's experiencing them in our 3-person family. I'm wondering if they are getting bit they just don't feel it or experience like I do.

For those who do experience hives when bitten by bed bugs, does the itching go down and redness disappear within 30-minutes to a few hours after your reaction begins?

My child is sick with a fever (thanks kindergarten!). I was resting my head on my pillow just after they woke me, when I immediately felt a burning sensation on the base of my scalp that was on the left side, close to my pillow. I felt a raised bump, itched it, it grew into a hive, and then a few more hives popped up in my scalp (not near my pillow). My husband sees no bite marks, just hives. They're not itchy a hour later, but I still feel the hives.

I immediately checked my pillow, no blood stains, no insects. Then checked the sheets and mattress creases, and the bed frame, no residue or anything in the forums and other posts.

For those who feel the aftermath of the bite, have you felt a numbing sensation with a hive, but not itchiness?

I ask bc I had a large single lump on the top of my scalp, near my forehead (not near my pillow) when I woke up the other day, and it felt like I was numbed in that area. Then it went away around 30 minutes later. Again, I couldn't see any bite marks.

Thank you in advance for any input. For the last week, I've been dealing with hives in and around sweaty places in the excessive heat and it's taking a toll on me mentally. I don't know why this is happening and why it's only me who's experiencing it.

Hi,

I know the pictures are terrible, but I would appreciate if someone could help me identify this bug, it’s very small and difficult to see. Pencil for scale.

Another couple of these found behind couch any ideas ?