Esophageal problems

I had my lapband in March of 2007, I have lost 100 lbs and I was 61 when I had the surgery. In the last year I have continually been having problems with my esophagus burning, lots of phelgm, purge some, I never had this problems before. Im just hoping its not caused by my lapband, I have heard on tv that it is one of the side effects, would like to hear from some of you that it has been at least a couple years since your lapband.