hi there your seem to be suffering from hyper acidity leading to gastric ulcer disease. You need to be treated with antacids and a course of antibiotics to take care of H. Pylori infection if any. You need to regulate your meal times to regular intervals and cut down on the fat and spice levels. Sometimes change in the water quality consumed can also cause excessive burping. Avoid food rich in proteins
like legumes, eggs ,beans etc which are presumed to be gas produceing food items. Take care.