I'm sorry your not feeling well but I'm a little confused as to why you have so much fluid in your band after just being operated on?? you should be empty or 1cc at max? Never heard of anyone having 3 cc's removed a few days after surgery.
Sounds like your band is to tight and thats why you vomited. I hope your not eating and just drinking clear liquids.
How big is your band????
I thought the same thing as you after surgery, why did I do this...then I remembered oh yeah...to save my life. It took me several weeks to feel some what normal so hang in there, its all part of the healing process. Make sure you get liquids in you or you'll be back in the hospital for dehydration.
hope your feeling better...if not call the hospital.