I think it's perfectly normal to think that way. When I made the decision to go for lapband surgery, I did the same thing for about a week and ate everything in sight...then decided that it might be easier to transition into my new way of life by cutting down on snacking and fatty foods and of course drinking diet coke, so I tried that for awhile and lost 10 lbs in about 3 weeks. But...now I am back to getting nervous about surgery on June 10th and thinking every meal is my last one and eating whatever I want again.
I totally know how you feel and don't be too hard on yourself. If you want to enjoy life now, do it!
Take care, Cathy