I've been having constant burping and indigestion since the last 3 months. I've had rifaximin, done endoscopy blood work everything is clear. H pylori medication taken since then no relief. I've also had pan-40, veloz d, gaviscon gel no relief I don't have any bloating only knotting feeling in lower abdomen along the gurgling and rumbling sounds and constant burping i am feeling hungry and able to digest also. Kindly advise what can be taken.