Hi welcome to health care magic.... You could have ulcer or gastritis like condition.... As you have pain on eating it could be gastric ulcer.... See cause are numerous ....it can occur in young age also.... The causes can be...... -smoking -alcohol -stress -prolonged NSAIDs use -excess tea and coffe -Bad dietary habits etc.... Anyway now if you have above causative factors eliminate that causes.... Drink more water.... Fruit juices and green leafy veg more.... Take pentoprazole on empty stomach 1 hour before meal for 2 to 4 week.... Junk food and non veg kept limited.... Cooked oatmeal good in soothing stomach.... Excess spicy food avoided... And high fatty food not taken as they delay gastric emptying... If still condition worsen then consult gastroenterologist for further work up.... Take care. Dr.Parth