Hi as symptoms are suggestive of gastritis. Need to follow some lifestyle changes. Take food timely. Avoid cabbage, capsicum, citrus fruits , Tea and Coffee( for a while). Don't drink water with food, take after 40 min. as much as needed . Don't lie down immediately after food. Finish night meal by 8.30 pm maximum. Go to bed after minimum 1 hour after dinner. Always keep stomach 1/4 th empty.Divide meal into 5-6 times a day. Avoid the particular food, which is being observed to cause bloating, fullness, upper abdominal pain/ discomfort, reflux symptoms etc. A good acid blocker like Pan 40mg daily can be taken to check excess acid production. Visit once , would try to help you out