dear friend, welcome to HCM.
it surely looks like dyspepsia/ acidity variants.
if pan D and alike are not helping, you should see a gastro enterologist and get endoscopy(OGDscopy) done to see for GERD/ ulcers/ gastritis
etc. H. pylori evaluation. sometimes bowel infection , amoebiasis
BTW, how old are you?
any other symptoms/
pl. revert with more details . would be glad to help you.
pl. continue pan-D etc. it needs 3-4 weeks to heal, if there is any ulcer, inflammation.