Hello there. I can understand your concern. .everyone has a different understanding of the word "gas". Some refer it to as  acidity , some refer it to as tightness of stomach, some fart, and a few refer it to as any pain in the stomach. There is no definite understanding of the word gas. Cannot really suggest anything based on just this much information. Get it checked out by a general physician in person for further evaluation and management. Best regards. Dr. Anil Kumar Jain. Bangalore