Gastric problem 16 days. This gastric.

After covide gastric attacked  me. Using pan-d since 16 days and sucral-o Syrup since 6 days. Getting better for one day and again same gastric problem coming. Not eating proper rice since 10 days. Only 9 eggs per day, ensure protein milk ,dry fruits and fruits. How many days I have to face this problem. Got this gastic when I got angry and in stress because mom has covide to. Now we both recovered. Problems are chest pain once or twice stomach right and little left side pains once or twice. Smell coming out to nose without burps. Very little breathing issue O2 dropping. Done all the tests CRP, CBP, RBS, d-dimer, HRCT, kidney function test. Liver function test. All the report are good. How to get ready of this gastric.