Did you vomit? Remember, you have a complete stomach below that band. Vomiting causes our whole stomach to convulse and expels stomach contents up through a very small hole. This can cause band slippage and most definitely a lot of pressure on the upper stomach which could cause inflammation if not tiny tears in the stomach wall. You should go back to your doc.
Next month is also my 4th anniversary. I too went in last month and they took out 1 CC. It sure made eating easier. Very few stuck episodes since. But I think I need .5 CC put back in. Maybe after Xmas?
tmf