I have experienced the same thing. I had a follow up appt yesterday with surgeon and he said that it was my old habits and my body wanting to have the sugar and carbs it was used to getting before. He warned me about regaining the weight if I didn't stick to the protein and fluids regime. Also warned about the carbs that increase insulin which increases appetite. I don't know if this helps but it made me think about my goals and reevaluate things.