Hey. I'm 21 and currently in my second year at university.
I can totally relate to what you mean. At my first year I wasn't really sure who to talk to and I felt that I was on a totally different level to most of the people there and by that I mean I felt stupid compared to everyone else. I never really had any proper friends until the end of 1st year. If I felt that I had to change myself to please someone I just wouldn't bother with them. I'd rather be by myself and be happy rather than be someone I'm not. But its like I said it took me a whole year at Uni before I finally found some people that I could relate with and get on with quite well.
I think the most important thing here is to be yourself. With new people I usually get quite uncomfortable in conversations. But once I get to know them those uncomfortable feelings go away. It's different though if you are still feeling uncomfortable several weeks or months after talking to them and your having to act differently every time your around them. If that's the case then they're obviously not right for you (and I don't mean that to sound stuck up or anything) so just edge your way slowly away from them, although I understand that it might not be easy at first but you don't want to make a big scene out of it. You'll know who your friends are, you just have to trust your gut feeling, that's what I had to do.
I hope everything works out for you!

If you want to chat you can send me a message anytime.