Hello
Thanks for your query
You might be having
gastroesophageal reflux disease.
Following investigations will help in diagnosis:
24 hours esophageal pH monitoring.
Esophageal manometry
Esophagogastroduodenoscopy
Barium swallow XRay
To get relief --
Eat smaller meals at a time
Avoid acidic & rich spicy foods
Decrease weight if you are obese
Sleep on the leftside and keep upper part of your body raised.
Take proton pump inhibitors like Omeprazole ,
Pantoprazole or Rabeprazole to decrease
gastric acid secretion.
Anti reflux surgery like
Nissen fundoplication may be needed is severe cases.
Get a checkup from a gastroenterologist . Don't selfmedicate .
Update here how you stay.
Take care.