Hi, why am i bleeding everytime i masterbate? Sometimes its alot, it doesnt last that long. My lower stomach also hurts and i feel as if im going o fart. I have been on the depo shot for about 5 years now, and ive been to gynos and drs and they dont know what going on. Also all i do is rub my clit fast i never insert anything. Im 18 and also a virgin what could be wrong? Im worried that it could be serious.