A couple weeks ago I engaged in sexual activity with a somewhat familiar woman. We had unprotected sex (i did not ejaculate in her) and she gave me oral (i did ejaculate) both without a condom. And she has had sex before several times, but assured my she has no stds. A few days ago I noticed a somewhat large bump near my anus, but how could this be? Unless fluids from her vagina or mouth dripped down there or something. Theres also a possibility that this could be a hemroid, my father has them. There is only one bump and it is painless, but sensitive if touched with my finger. What would you guys guess it is? We did have sex in the shower so it may be possible that water carried some fluids into my anus. I did also give her oral sex, but there seems to be no sores around my mouth. I am going to the doctors on thursday to have him check it out but I am not sure if I should mention this to him, with fear that my parents will find out, I would like to avoid that if possible, so for the first time in my life im praying its a hemroid. I would also like advice on another thing, if they doctor says it is in fact a hemroid should I tell him about my partner just to make sure? I am only 16 and am very confused, if someone would help I would be very very grateful.