I have been with the same person since i was 16 (i am now 20) we lost our virginities to each other & have only been with each other. I had my last pap smear in september and everything was fine. Lately however sex has been a little painful - at first i just thought it was because there were long periods of time between us having sex and my body was just getting used to it again but then after sex when i pee it burns. Then the last time we had sex i bled a little during. I have never bled before during anything sexual. I'm on birth control and between sex everything is fine - so i have no clue what the problem is - Help?