I JUST stopped my preop diet 2 days ago (cuz I had surgery of course), so honey I know exactly what you are going through. It was the worst thing I've ever been through. I cried and complained to my family nonstop. I did eat grilled chicken once, salmon once, and on 2 different occasions, I ate a piece of string cheese. I just couldn't do it without having a tiny bit of something. I had my surgery 2 days ago, and my surgeon said my liver looked fine. I was having nightmares that he would go in and not be able to do the surgery. If you must cheat, have a small piece of protein....no carbs. I promise, you will be fine. Good luck:)