I started my depo- provera shot November 12th, and I will be off of it February 12th. Its my only shot. I've missed my periods then all of a sudden I start bleeding. Its very bright, and very light. Constantly nauseous, and stomach is growling all the time. Plus many more pregnancy symptoms, but since I'm on depo I understand my periods will be messed up and stuff, I just don't understand the light bleeding which seems like implantation bleeding to me. Please help.