I have a 7ml band fitted 3 years ago. I lost 4stone in the first year, then nothing. I have 4.5ml in the band. And have suffered from pains and swollen upper tummy. Also I know I have scarring to the windpipe and esophagus before the band was fitted. I have had xrays and ct scans but they cannot find the trouble. What would the problems/symptons be if I have stretched my pouch and esophagus?