Okay, this is a very embarassing question. I just have this---this THING which has been troubling my sex life. I'm a 19 year old in a relationship with my very first and very sweet boyfriend. Both of us were virgins when we had our first time, and are still having an active sex life. But what's happening recently is that I can't reach orgasm. I don't know why. There were times when it happens, and other times when I can't at all no matter what we do. It would, at most times, build up during the act, and then it would stay into a certain level to the point where it feels really uncomfortable. Usually at that point it would, I dunno how to say it, but it'd suddenly go rebound. It would start again as if right from the beginning. Without ever reaching orgasm.

Keeping it up doesn't help either. If we take too long I'd start feeling sore inside, and therefore it distracts me and keeps me from enjoying it. Is this common, and could there be a remedy for this?