hi, i recently went to see a doctor about bleeding during and after sexual intercourse. she took a smear (even though i am under 25) and varoius s.t.i tests. this is the third time i have seen a doctor and i don't seem to be getting to the route of the problem. i have already taken a chlamydia test which came back negative. the bleeding isnt light, its EXTREMELY heavy and can last from an hour or sometimes up to a week! and it never lightens up, its constantly heavy, about 3 times heavier than my period. a couple of years ago i was told i have a flamboyant hymen, but i had it cut. could this have anything to do with it? that is where i experience pain during sex too. i am also on the contraceptive injecton, could this be causing bleeding, even though it starts during intercourse? i also used to have irregular periods and was told it could of been endometriosis, but it was left. could this be it?