I'm really nervous about moving back into college dorms this year

Is there any way for you to get contact information for your new roommate before moving in? If you can introduce yourself and learn a little bit about them, that might help soothe your nerves. Once the two of you are moved in, you could also try setting some ground rules. For instance, designated quiet hours, overnight guests, parties, or even just who buys what.

Also, just in case, do you have any other options? Could you get a single room or an apartment? Do you have a friend or two that you could room with? The most important thing to remember is that you are sharing a space with your roommate. It might be their room, but it's yours too and you should be able to speak up if something is a problem.