Missed Periods.

My last actual cycle was in July, I had breakthrough bleeding at the beginning of August and stopped my birth control because my body just reacts badly to it. My hair has been falling out more than usual, my body is breaking out, I have severe pelvic pain (not cysts because I've gone to multiple doctors). I've confirmed that I'm not pregnant but stress has been a huge factor in my life recently.

I just don't know how I should be treating this if there is anything I can do.