I dont think you should worry too much, I put up a topic about how lonely I am and in it I mentioned that I didnt go to my graduation due to a social phobia of sorts. I definitely think you should just forget about how much of a big deal it seems and realize that once you have gone you will be happy with yourself. I can guarantee that.

Plus, college is a much better experience than high school and when you are there i am sure you will make more friends, it isn’t nearly as cliquey as high school.

Dont worry this seems like a typical situation of scary at first and happy when you actually do it. In your mind it is terrifying because you think about an awful situation and you cant do ANYTHING to stop it. But remember when you are there it will be real, and wont be worth worrying about because you can actually tackle the situation.
😀