It's important to talk to people about how you feel. Your family, flatmates, tutors.. anyone who will listen. Because there are things you can do to try and enjoy things more, like join new societies, go out more if you don't already, manage your work load better.. and if you really don't like where you're studying, there's always the chance that you can get a transfer next year. But it's important that you think about why you're miserable, and whether moving uni would make it any better.
Is your subject right for you, even if the uni isn't? If so, then a transfer might be the way forward. Think about is it your course content you don't enjoy, or the way it's taught? What are the tutors like? Supportive?
Just some things to think about to help you think about how you really feel.