Hi and thanks for the query, It is very possible that this should not be sue to a problem with the physical nature of the stomach or your intestines. It is a functional problem , meaning that it arises mainly due to some abnormalities in contraction of intestines. There are moments when can experience either very strong or very weak contractions with corresponding consequences on digestion. This either increases or reduces the movement of food along the intestines. depending on the time spent, some bacteria, especially in the large intestines feed on this food, and produce lots if gas. Eventual passage of gas could relieve symptoms in some people. This could be seen in irritable bowel syndrome. Drinking much water, diet rich in vegetables and fruits, and exercise are initial solutions. drugs to normalize contraction of intestines also do exist. Consulting a doctor first is important, preferably a gastroenterologist. Kind regards