Me and my girlfriend just started having sex without a condom, as she is on the pill. The first two times were fine. But on Friday it hurt me a bit. My foreskin got pulled back quite a bit and it felt like a short stabbing pain at first. Then the pain went away and came back towards the end. Now when I pull back my foreskin I have the stabbing pain. I can't see anything that looks damaged though. Luckily, she's on her week break from the pill now so I have a week to get better. I'm not circumsized by the way. So what happened? Did it just pull my foreskin back too far? Why didn't it happen the first 2 times? How can I avoid it happening in future? Thanks for the help in advance.