Need some insight. (Long story)

I've been on depo for only 6 mo. I quit over 2 mo ago.

I haven't gotten my period yet. I've spotted brown/pink. It wasn't like a period tho (that was in December, right when I quit the shot). I keep having to push my period back (this has gone on for about 2 months) on glow because it says I start that day.. and then I don't start (which is fine, the app is just doing what it is programmed to do).

Anyways, I've taken several pregnancy tests for 1 and a half months. I've gotten some faint positives, and then negatives. I've went to the doctor (almost 5 weeks ago, when I started taking HPTs) and got a blood test done. It came back negative. Since then, I've spotted again (only when I wiped, didn't need a pad/tampon), have been extremely bloated, very gassy, going to the bathroom more often than usual, having non-period like cramps, and I have been nauseated a time or two.

My first actual faint positive was on Feb 6th. Since then the line has either disappeared, or been extremely light. But here's the catch, I have used different brand of HPTs and they have came back completely negative. And I haven't started my period (I've been told it might have been a chemical).

I guess I'm just asking for a little insight on what/where I need to go from here.

I'm sorry this was so long.