Suggest Remedy For High Belching Of Acids And Pain In Upper Abdomen

i am having heartbrn for the last 2 yrs. consulted a few doctors. most of them prescribed PPI's with a combination of Domparidone. It gets better with the medicine, but recurs a few days after getting off the medicines. the time of irritation is typically 3-4 hrs post lunch. it continues till dinner. feels better after dinner. But occasionally the attack is very high leading to high belching of acids and continuos burping. Feel a restriction a sometimes an intriguing pain in the upper part of the abdomain just beneath the ribcage.