You may be suffering from gastrocolic reflux. You need dietary modification. High fiber diet .( prune , whole wheat bread , oats ) You need to consume 10 to 20 mg of fiber per day. Oral Rifaximin or rifagut may help. Don't drink water after meals . Consume short frequent high fiber meal with 2 ounces of water alternately. Avoid heavy meals and fatty meals
Next Steps
Consult a surgical gastroenterologist to rule out any form of diet intolerance like lactose or gluten allergy