Hello, and thank you for your medical question on e Health Forum.
Stomach or intestinal gas is a byproduct generated during the process of digestion. It is generally expelled from the body, either through the mouth (called belching or burping) or through the rectum (flatulence or flatus). Excessive production of gas that causes bloating could be due to indigestion or reduced quantity of good bacteria in the gut.
In addition to dietary and lifestyle changes, OTC medications such as activated charcoal, probiotics and digestive enzyme supplements can be used for intestinal or stomach gas relief. Activated charcoal tablets have the best effect in relieving your symptoms.
Other important aspects of disease management include dietary and lifestyle modification, physical exercise, weight loss, maintaining adequate hydration.
Adopting a sitting upright posture for 1 hr post meals will help in relieving the symptoms.
You might consider consulting your general physician or a gastroenterologist who after a physical examination may determine to get additional tests to derive a definitive diagnosis to your problem.
I hope you find this helpful.