u/Apprehensive-Net8755

So yesterday I posted about how I feel my period coming.
https://www.reddit.com/r/PregnancyAfterTFMR/s/5MS74rsQ3d
Today it didn’t come in the morning, which is usually the time it comes. I decided to take a test, even though according to my app (I use Flo) I should’ve waited two more days, and I got a positive! (I think?) It is brighter than the test line, but it is defined. I feel very weird but mostly happy. I know it is too early to even be sure about it, but I was so worried it is going to be negative. Just wanted to share this if anyone is going through something similar, apparently your body can surprise you.

This is my third cycle of TTC and I know my period is coming. I feel it in my back the same way I’ve been feeling it all my life. I TFMR in January at 27 weeks through delivery. I feel like I’ll never have a baby. I’m 34 and all my close friends who want children are already planing their second baby. My sister is pregnant with her 4th child and is due in a few weeks. My TFMR baby was conceived on the first try and I thought I will get pregnant fast again but it feels like it will never happen.
I know three months of TTC is not a lot, and I’m sorry if this is triggering for people who have been trying for longer. But I just woke up today with my backache and feel so defeated.

I had a positive OPK on CD 15. It is now CD 18 and my temperature still hasn’t went up. Is it normal? Did it happen to anyone?
I know the positive test means you ovulate 24-36 hours after, and then after ovulation your temperature should rise. I just can’t help but freak out. I miss trusting my body.