Kim, I agree with what everyone else has said. Keep going through the difficult times, I'm sure it will be worth the initial struggle. I know from my own experiences at university that the earliest weeks are by far the toughest, there was one point after a few weeks where it felt like being on a treadmill that was being turned up to go faster and faster with each passing week while I was still adjusting to life away from home for the first time.
One thing that really helped me through this time was music - I was exploring the catalogue of a certain country-influenced American rock band (hmm, can't think which one ), whose music helped me a lot along with some of my other favourites.