I have my pre op appt. tomorrow and I am so nervous b/c I haven't lost any weight.... I am not getting all my shakes in for the day and I think I am in starvation mode.... can they cancel my surgery for not losing any weight yet?????

Did your surgeon say you needed to lose weight before surgery in order to proceed? If not don't be worried. Some people lose a lot of weight on their pre-op diet (I lost about 12lbs) while other people any lose a little. The purpose of pre-op is to shrink your liver to make access to your stomach easier for the surgeon. As long as you stuck to your shakes and didn't eat foods outside of your pre-op diet allow list, I think you'll be fine!

Don't over-worry yourself.