Hi,
It's a bit different, but I was living in America for 3 months this summer, I'd go along with the person that said listening to radio shows from home really help... as do looking at international chat rooms and things from home on the internet.
Also, try intergrating yourself into the community you've moved into, do you have a job? are you at uni? if you're studying, try and get involved in some societies, there may well be a society for international students and there should always be someone on hand to help you settle in. If you're not at uni, try looking for a job, this'll help you meet people and also give you something to do.
Try also joining a sports club, or a hobby club that interests you. The more people you meet and get to know, the more this strange little island will begin to feel less intimidating.
Good luck, I hope you feel better soon.