bleeding after sex

M
Does anybody else have this problem or had it and can tell me what is going on?? Everytime after sex I go to pee and I bleed. Sex never hurts, I never feel any symptoms or anything. I just go pee and when I wipe there is blood, can anyone tell me what this may be??? It doesn't hurt at all it's just blood I have no idea 
Btw. I do not get a period haven't had one in 7 months because of the depo shot so it's not my period