Amazing what too much pressure from parents can do - mingling with the mind so much that it confuses the person enough to not see the obvious, and making them question something they that do believe in.
If you're forced to do something, why would you like doing it? And if you don't like doing it, you're obviously going to start questioning it sub-conciously, then more openly.
Pretty sad really, stop feeling sorry for yourself and stand up for yourself. Once you start doing that, you'll automatically start doing these things which you oh so hated doing before because you were forced to do it. You have low self confidence, but you're still allowed to have fun, you're still allowed to have girl mates. If uni if crap for you, it's what you made it. If you go into uni with a smile, your day will be better.
If you go to uni with a sad face on, you've made your day ****. It's your own fault.
Smile. Make compromises. Negotiate with your parents. You'll feel much better, I can bet my life on it.