I would deff go the the Dr and get it checked out. if it wasnt to long ago, you might beable to get a rape test done, so they can gather evidance that might help.
Also, from self experiance, I would sugest finding someone you trust alot to talk to about it, or even talk to a phsyciatrist , or counsler(sorry cant spell lol) things like that tend to haunt you, talking about it helps alot. Or if you want to talk, but you dont want to tell anyone you know, you can talk to me about it. Good luck, and im so sorry you were in that possistion.