Talk to Gastroenterologist on Moderate Pangastritis

Suffering from more than 1 and a half year took several medication but no significant improvement is seen.my symptoms are that i feel burning sensation in my upper abdomen sometimes and sometimes pain. i am currently taking this medication Espra 40 Ganaton OD Seroxat 12.5 Nimixa 200 colofac For 3 weeks now. What medications should i take from now onwards for my gastritis, because i am having pain a little bit lower than my upper abdomen which goes away after i put heating pad..... kindly suggest something for it too. because i am suffering from covid 19 i am not able to visit a gastroentrologist , its been a month Kindly post it in gastroentrology.