See a doctor, definitely, in case you have a condition that needs corrected medically.
I have a hiatus hernia and was prescribed omeprazole 14,years ago, which of course miraculously removed the terrible acid reflux and meant I could eat anything I liked.
However…… fast forward to the present day. After researching the effects of such drugs long term I do not take anything now, other than the odd Rennie.
My solution:
Small portions at all meals
Breakfast = porridge with fruit and cinnamon cooked in skimmed milk
NO coffee, wine, chocolate, bought pastries or scones (I can eat my own homemade baked goods sometimes). It’s worth doing without these”goodies” to be rid of reflux)
I wish you well with your efforts to end the pain and discomfort.