Im getting my braces on July 6 and im scared to get tem cuz i dnt kno if tell hert?

I dnt kno if tey well hert but i think ter really kewl cuz u get to do a whole bunch of stuff wit tem and i wnt to kno if tell hert me or not wat do tey hert plz and im getting spacers on te 17 te day i get out of skool anf bands on te 24 help me plz!!!!!