Struggling with Silent Reflux and Chronic Gastritis

Hi all! I been suffering with silent reflux, chronic gastritis, chronic inflammation for almost two year now… tried 3 different PPI and none worked. I am on famotidine and dosent do anything at all. Changed my diet and did everything and actually my symptoms got worse recently. Almost everything makes me stomach feel heavy right away and dry cough, gag and feel like I have to throw up and sometimes it happens without me eating. Now I am not sure I been on Zoloft for almost 5 year and idk if it causes issues with your stomach. I just want to know if anyone has the same issue. I see the doctor and a few days but I feel like there useless at this point.