I had a similiar experience when I came home from the hospital. I was banded on 12.23.10 and on my first night I ended up being put back in the hospital for two extra days. My surgeon had no explaination for my dry heaves, nausea or pain. I have a very low tolorance so I was taking liquid vicodin as often as I could. Now I am much better but I am experiencing burping gas after I eat or drink. I am taking small sips like they suggested but nothing has changed. At my first doctor visit I was down 10 lbs. I don't have a scale at home or I am sure I would be on it everyday. Hope you feel better soon!