%-) im so nervous. For the past two weeks i have been worried about if im pregnant the thing is though im on the depo shot. I thought you couldnt get pregnant if your on that. My period this month wasnt a period at all it was light and short 2 days short never had that happen and im having sharp pains in my stomach and really bad back aches. No morning sickness or swollen or tender breast but really bad pains. What could this mean can some one please help me and let me know.