There is no rush for sex. Ever. But especially when you’re so young. It’s important to know that not everyone is doing it, even if you think they are. It is a very special thing that you should share with the one you love and the one that loves you. It’s serious, it complicates things a great deal, and it takes a lot of emotional maturity to handle it, so the older you are, the better. Don’t let your friends influence you.
And just because it hasn’t happened, doesn’t mean there is something wrong with you. I’m sure you are a beautiful person. You just have to wait for the right person who sees that, and I promise you, it will be worth it.