Hiya Jess....dont stress about it!
My neice is 18 and LOVES it out there! Theres loads to do, loads of see. There so many opportunities waiting for you out there. Shes studying, working part time, can afford to drive, out with her aussie mates who love her accent and her different ways.
I know everyones different Jess, but in a few years time, I'm sure you'll be settled in your new life and loving it!
The only problem is that theres apparentely a long line of boys following her around.
Dan