I've been on depo for over 4 years now. I did take a short break this past fall, to get my body back on track. Once I had one period, I got back on the shot. I had never had any spotting, cramping, or periods while on for the past 4 years. I just got my shot on April 16th 2010. I have been sexually active, and last weekend May 2nd I was intimate with a friend. We were not protected, and we were rather rough. It's now May 10th and I just started bleeding today, with some moderate crapms. I don't know what this means, because I was never spotty throughout the 4 years of being on depo. Is it possible he damaged something or hurt my cervix? I need some reasurrance, or maybe a gentle kick to go to the doctor.