Hello dear, The symptoms as mentioned in your post can be attributed to accumulation of gas secondary to increased acid production in the stomach. As the investigations like sonogram, egd and colonoscopy does not reveal any abnormality, pathological cause for the symptoms can be ruled out. Symptomatic relief can be obtained with intake of Pantoprazole preparation (to be taken twice a day before meals) & antacid gel (to be taken after meals). They prevent formation of excess acid in the stomach & provide symptomatic relief. And it is also needed that you take certain precautions regarding your diet & lifestyle, such as: 1. Take soft, plain, non-spicy foods. 2. Drink lots of water to maintain adequate hydration. 3. Avoid fast foods & gas producing food products like cabbage, etc. 4. Avoid smoking & alcohol. 5. Keep away stress, think positive. If symptoms still persist, kindly consult a Gastroenterologist for proper clinical examination. There is no need to worry, you will be fine. Wishing a good health. Take care.