Help!!! 😬

I don't always have a regular period, and taking birth the control usually doesn't help but make things worse because I forget the pill (the pill and most other BC gives me abnormally heavy periods) . 5 months ago I stopped taking the pill and since then each period was lighter until about 2 months ago when I had a 12 hour period that was pink with what looked like brown pieces of discharge in it or old blood. I haven't had a period since then and have taken 4 test, the first came back with a little bit of a blue possitive but barely noticeable and the others all read negative. I'm uncomfortably bloated, my boobs are a little bigger but they don't hurt, I'm hungry but I just can't stomach a lot of food which is strange for me, and I am exhausted. Lately I've been working 12 hour days (2 jobs part time, covering for a coworker at one of them) and am going through a ton of stress because my parents are divorcing (this is recent even in the last 2 weeks). eve says I'm 25 days late but don't really have any symptoms of period at all. I go to the ob/gyn the 7th.

Any ideas?