My biggest problem with my first dorm was the bathroom issue. I don't know what I thought....but, I never expected there to be one bathroom for 20 people. No privacy at all! So, I dealt with it until I could move into a different dorm with single bathrooms. We had 3 on our floor and about 12 people. MUCH better. You could go in and shut the door and do your business.
I wanted to go home at first - mainly because of the bathroom thing - but, once you make friends and start classes and get involved, you won't want to be anywhere else.
Good luck! Study hard!