Hmmm everyone will experience the same,dear. In our whole lives, we must face new environment, make new friends. it's unavoidable in your life. Just accept the truth. Then, be kind and always smile. it can do help when you make new friends. Don't worry. don't worry that new people aren't good. It needs time to know one's heart.never jump to conclusions. Besides, even though you really dislike someone, never make him or her become your enemy.
I know you are really lovely and kind girl. Your new roommates will know the same, or even better than I do O(∩_∩)O so don't worry dear. You will find more good friends !