I just don't know what else the burping could be from. I've had endoscopy, biopsies, abdominal ultrasound, abdominal and pelvic ct scan, barium swallow with bowel follow through and 2 gastroenterologists tell me everything is fine and they have no answers for the burping. It's not reflux, not diet (I belch from water), don't drink carbonated beverages, don't "swallow air"...I woke up one day and this started :(