the same thing happened to me ...to my counts I had at least 7cc and my band only holds 4cc. I had been keeping track by my dr never brought in my chart. So finally after not losing and no restriction, I called him on it, he always had a hard time finding my port. Well as it turns out , I had a leak in my tubing next to my port. Another surg. and more bills, now filled to 3.75 I do feel some restriction but havent hit the sweet spot yet. I would ask dr if you have a possible leak, or maybe one of your fills missed the port.