Ive had braces now for about 4 months now, and they are fine.
Don't worry about them, I mean ur only gonna wear them for about 18 months or so, maybe even shorter and then for the rest of your life you will have lovely straight teeth.
The only thing I found painful was not being able to eat solid food for about 5 days after they 1st got put on!
Good Luck and let us know how ur getting on!