Hi Most likely you are having gastroenteritis with overlapping gastritis. As you are already on medication and yet not relieved,I would advice you to go for endoscopy to rule out the cause of the gastritis,As sometime infection with H.pylori bacteria can be a cause of gastritis. Secondly for indigestion i would suggest you to take probiotics daily along with these medicine.A stool routine and microscopy should be done and if possible colonoscopy and ultrasound abdomen should be done to rule out the possiblity of inflammatory bowel disease. Some diet restriction should also be followed refrain from eating oily and fast food Drink plenty of water Eat lots of fibres preferrably soluble in your diet. Thanks