okay so i was just reading the previous post about anal sex. I am going to do it with my boyfriend and im a little scared. He experianced and we've talked alot about it. Im worried about getting stuff on his penis because it is going in that place. I read something about an enema. what is that? Also another question and non anal. i had sex the other night and we were going at it pretty heavily and i bled a little bit. Why did this happen? will it happen again if i have rigorous sex again?

thank you