If u have discomfort in ABDOMEN after meals. That is Gastritis and can heal well.
If not healing then h PYLORI test Should be done. Sometimes endoscopy may be done find Various Possibilities including ulcers erosions, hiatus hernia etc.
Diet and lifestyle are no doubt important. Small meals Should be taken, and fruits salads sprouts green vegetables have to be major portion of food.
Burning in chest would mean gerd.
All these have different Treatment. But gerd is most difficult to control permanently because it depends on psychological factors also.
For Gastritis single drug is often not enough and more drugs have to be added like sucralfate, ranitidine etc.
Health Tips
avoid spicy foods coffee tea cold drinks alcohol smoking junk food etc as all these aggrevate Gastritis.