You should be excited!!! This is going to be the best thing you have ever done for yourself! Don't be worried about the surgery, the morning you go into surgery, think to yourself, this is the first day of the "start" of my "new" life! As far as losing weight afterwards, my advice to you is, go in with an open mind, and realize right away it won't happen over night, and that you have to make it work for you! I am very proud of you for making this choice, and if you need someone to talk to I am here!
Ash