You really need to see your doctor. I went through this same thing; started deeling faint at times; blood pressure dropped; could not keep anything down. The surgon unfilled twice; and then I lost something like 23 lbs in two days! Called a different Doc; had an upper GI done; discovered the band had slipped. Potassium level was way low and almost bought the farm during emergency surgery to remove the band....heart quit under anestesia. Went five months and just had the band re-installed. This is an excellent weight loss aid but you really do need to be cautious and get to your doc the moment problems start up. By the way, just prio to all of this I started having uncontrolable burping.