evaconda

My gastric sleeve surgery is 8/11 and I will have to have my gallbladder out due to stones. I started Optifast Monday and I feel constantly nauseous , gassy have diarrhea and have excruciating headaches. I bought the shakes the soups and the bars all the flavors. I have to be on this diet for 2 weeks to shrink my liver. The chicken soup is horrific! And I feel so bad because I already cheated with Wendy's salad. And I had a piece of cheese string. Can anyone help!!! Any advise will be appreciated ! Even prayer to get through. Is there any replacement diet for Optifast?! Please HELP !!thank you!

I started optifast Monday I am supposed to be on it for 2 weeks. I have gastric sleeve and gallbladder surgery on August 11th. I bought everything they had the bars all flavors the soups chicken and tomatoe and the shakes all flavor. OMG it is horrible I am constantly nauseated I have excruciating headaches. I feel so sick I have diarrhea , I already cheated I have been eating Wendy's salad and cheese strings. I don't know what to do. Is there any other replacement diet. Please advise, I appreciate any advise and prayer, Evaconda.