Consult..already pre opt diet..

I just had my consult today.. with the dietican, doctor and nurse. Im already started my pre opt diet.. high protein drinks and one meal a day less than 200 calories... Bleh... im a really nervous about doing this diet, and surgery, but i know i need to do something about my weight before it gets more out of control. Can anyone tell me what happens after surgery? How bad was the pain, Im just wondering what to expect! Thanks for all the feed back :cursing:

Thanks!