Lightthecandle, you have no reason for feeling embarassed, we talk about everything in this forum, and that's a perfectly normal subject. There's nothing wrong with you. I know there are many young girls and even grown women having the same problem. I wasn't molested as a child. However, I did feel exactly like this too as a teenager. So I understand you very well.
What I did to escape those glances was to eat a lot and get fat. That's not a very smart way to handle this situation

Like Lola said, you'd better ask a counselor for advice, and take a self-defense class with other girls where you feel comfortable. Having some people to back you up would be great. Generally gaining more self assurance would help too.
Some day you'll notice them looking at you, and just think "oh great, they see how pretty I am".