Sounds like you might have a problem with excess stomach acid.
Try avoid acidy and irritating food and drinks (coffee, carbonated beverages, tomato sauce, salty foods, spicy foods
, citrus, etc), and all Aspirin
and anti-inflammatory medicines) for a week, use on otc acid blocker like Omeprazole
daily. If this doesn't help, i suggest seeing your family doctor. You may be developing an ulcer.