As others have said, just stick it out and it'll get better. I'm now in my third year at Cambridge and I felt home sick to start with.....in fact, I felt like that for most of the first term! Eventually though you get used to it, and I enjoy uni immensely now.
You'd be suprised how many people actually feel exactly the same as you.....I've spoke to so many people who felt majorly home-sick for the first term, but you get used to it. It's a big step going to uni, for most people it's first time they've actually been away from home for a prolonged period of time - you're taken out of your comfort zone and thrust into something so new and different - it's bound to feel odd. Stick it out though, it'll only make you stronger as a person, and in 6 months time you'll look back and think what was all that fuss really about.