carbonated drinks
My doctor and dietician say no caffeine, carbonation or alcohol for a year, if not longer. The carbonation acts in your stomach the way it does in a soda bottle when you shake it. One girl I was talking to said that she accidentally drank some flavored water that was carbonated and it made her almost immediately. Sorry that isn't better news for you, but I'd rather be safe and keep losing than revert back to my diet coke habit and have problems.
My doc said no carbonated drinks either - don't remember if there was a time limit or not. I very rarely drank any carbonated drinks before surgery, so going without after hasn't been a big deal.
I have heard of some folks opening up a diet soda, letting it go flat, then drinking it. I suppose that would be an option, if ya gotta have your soda!