Please answer?! Thanks!?

Okay so basically I went to my dentist and he said I have tooth decay and need to use fluoriguard and to come back in a month after using it toget my fillings done. I also have overcrowding and need braces(he told me I had to get rid of the decay first) so I'm assuming that I would have to have my teeth pulled. I'm going back for my fillings 28th June so was just wandering what's going to happen after I have my fillings done and roughly how long it will be before I have my braces done(: I'm 14 btw! Thanks x