Try some lifestyle changes . Take your food timely. Avoid cabbage, capsicum, citrus fruits ( for a while). Don't drink water with food, take after 40 min. as much as you want thereafter. Don't lie down immediately after food. Finish your night meal by 8.30 pm maximum. Go to bed after minimum 1 hour after dinner. Always keep your stomach 1/4 th empty. You can divide your meal into 5-6 times a day. Avoid the particular food, which you observed that after taking you feel bloating, fullness, upper abdominal pain/ discomfort, reflux symptoms etc. .Feel free to ask any further quary related to your problem. Regards.
Next Steps
You may require Laparoscopic Fundoplication if this is intractable