Hi, I am a 15 year old female, I am sexually active. I havnt had sex since October 1, 2010. I was recently on the DEPO shot ( birth control ) I stopped recieving the shot last month, but now I have been on my period for three weeks. It s not a normal period, it s brown has stringy like clots and most of it Lois like brown dead vaginal skincells. Is this by any chance normal? Is it just my body getting used to being off of the birth control?