I think virginity being stigmatized is revelant to the circles you're in. In strict religious circles, virginity until marriage is actually praised. It's not a view that I agree with, and a friend of mine mentioned in a conversation once that waiting until marriage to be with his then-wife was one of the worst decisions he's ever made.

Sex resides a lot in our culture, and for that reason, it's somehow "expected" that you lose your virginity by a certain age. I think that's silly. I'm 24, and I'm still a virgin. I do have times when I'm sexually frustrated, but that's not something that can't be fixed. Having a boyfriend whose libido equals mine has definitely helped that as of late.

Don't worry about it. Sex isn't the most important thing in the world, and you still have plenty of time. It will come in time, if you allow yourself to be open with people and let them get close to you.