Hi!
If you were my patient, I would be inclined to put you on oral contraceptives at least for awhile to regulate your cycles. Sometimes we use more than one pill per day in the beginning to get the bleeding under control. Once you had had a normal cycle for 3-4 months, I would have the discussion about birth control with you again.
It is interesting that you have lost weight, as most women who use Depo gain. If you were my patient, I would also do a complete exam, pregnancy test, pap smear (if you haven't had one recently) and I would request the results of the blood work from the ER visit. I would probably also consider an ultrasound.
The good news is that your fertility is probably OK. Usually the birth control has no permanent effects. The side effects of the Depo can last for up to 18 months though, so you might continue to have problems for awhile.
Good luck!
Dr B
my OBGYN has done the birth control to regulate my period. it didnt work. when i went to the e.r., they gave me a white pill and it helped for two weeks and the bleeding started again. i also called my OBGYN and i told them i came to you for help and she said she has done an exam and a pap smear and they were all normal. it has relieved me to know that i still have a chance of having kids. do you think all the symptoms are related? my doctor told me that it may not even be from the depo because of the weight loss and the blacking out when i stand up. Also i got these weird lights kinda like a strobe light when i looked right or left. the light hitting my eyes today was very sensitive and hurt. also weird ringing in my ears today, but only one ear at a time.