You might be having gastroesophageal reflux.
Avoid outside food and bakery stuff.
Avoid milk at bedtime.
Have food at regular intervals. Have early dinner.
Avoid oily foods, chocolates especially at night.
Cap. Sompraz IT 1-0-0(1/2 hour before breakfast) for 10 days might be of help.
Next Steps
plan for a upper GI endoscopy.
Health Tips
reduce weight if overweight.
regular walking might be of help