So F-ing Confused!!

(WARNING: LONG POST+TMI PIC)

OK, first things first things first: I'm not sure where I should be posting this. I figured I'd post it here because most of you probably have had something similar to this before or after pregnancy hopefully. I don't remember having this with my first pregnancy. Or possibly my body is just still trying to regulate and trying to get used to having no baby??First, I have to give a little back story.

I was diagnosed with PCOS when I was about 16 years old, they watched it and they thought maybe I'd grow out of it like maybe it was just hormones changing. Well, I got rediagnosed with it when I was 20, 22, and 24. I managed to get pregnant for the first time ever back in March, found out about little nugget in April, and unfortunately lost it at 8w5d in May. Before I got pregnant my cycles were typically anywhere from 52-60 days give or take. This was supposed to be my third cycle after losing the baby. I got my first cycle back in June a day before my wedding on June 25. It lasted 10 days and ended on July 3rd I think. The next period started on August 14-19. I've been using the app since way before I got pregnant I've been using it since December 2020. According to the app (which could be inaccurate) I'm 15 days late for my period. I haven't tested yet again because I have a car repair this week. But next week I'm going to test if my period doesn't start.

Anyway, today, I'm CD 55 and I just sat down to use the restroom and this was in my underwear. Has anyone experienced anything similar?