birth control
"When I first started the shot, everything was great.  I wasn't bleeding, it worked as a birth control.  Then, a month later I started bleeding heavily.  I bled for the entire month and longer.

I also suffer from bipolar disorder, and this shot only enhanced both my manic and depression episodes.  I became extremely irritable, erratic, and finally, I became suicidal.  After being hospitalized my doctor expressed concern that the shot had worsened everything.  If you suffer from any mood or anxiety disorder I strongly caution you against using this form of birth control.  I have used the pill before and never suffered such severe side effects with my mood.  "