You might be having gastritis/peptic ulcers or even gallstones, GERD or Hiatus hernia.
I'm sure you might have got your USG and endoscopy done. If not, get it done.
Next Steps
Visit a Surgeon or a Gastroenterologist and get a USG , endoscopy and if needed CT scan.
Health Tips
Avoid oily, spicy and citrus foods.
Take small and frequent meals.
Have dinner at least 2-3 hours before sleeping.