It could be gastritis ,or GERD
You could use sustained release pantaprazole 40 mg once daily and domperidone 10 mg twice daily before food for few days.
Avoid spicy, fatty food,alcohol and smoking
Usually gastritis resolves with proper diet habits and use of PPI ,in 6-8 weeks
Next Steps
if your symptoms persist ,you should consult with an gastroenterologist to do upper gastrointestinal endoscopy