Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. It can be stomach lining inflammation or ulcer like condition. Rabeprazole OD for week can be prescribed. Avoid gastric irritants like; excess tea, coffee, excessive spicy foods, smoking, stress. Rule out h. Pylori infection by urea breath test. If still no cause found endoscopy can be done. Hope I have answered your query. Let me know if I can assist you further.