did i pop it?

Okay, my g/f and I have been dating for about a year. We've been having sex since the fourth month. A couple of weeks ago we were having sex and she was on top. She acted like it was painful and when I pulled out I had blood on my d*ck and there was a...

moderate amount of blood kinda trickeling out. Is it possible that I just now popped her cherry? Usually I finger her to get her worked up and then I start off gentle and get harder and harder (so to speak) but I didn't finger her this time, AND she started out on top this time. Is that why?

You've been having sex for 8 months. You popped her cherry months ago if you are using that as a I'm still a virgin excuse. Perhaps she was on her period and her arousal got things flowing, or perhaps got a slight injury if you skipped the foreplay and were too rough with her.