I cheated a little as well and I am also having surgery on the 7th. A good friend of mine put it to me this way. These last few days, you don't want to cheat. You don't want to have food in your system when you have gone through surgery because it can make you sick. You also don't want to be constipated and trying to push with a sore tummy. When I thought about it that way, I was a little better about keeping on track.
I am with you on this one the diet is really hard but the worst of the liquids is almost over!!!