3weeks post op sleeve and tonight was my first night of vomiting. I had heard that it could happen but on Sugar free pudding, chocolate no less. Weight loss has been very slow post surgery. 13 lbs in 3weeks, I know that sounds good however all but 3lbs was in the first week. Only 3 lbs in the last two weeks. I get in my 70gm protein and 64 oz water and the Cal < 800 daily. What am I missing that can jump start more wt loss. I get in my vitamins and walk daily.