No need to panic, mostly it may be due to Oesophageal corrosion due to acid reflux which we call it as GERD. Please do a endoscope procedure to continue the same.
Currently i would prescribe,
Tab.Pan-DSR 1-0-1 * 3 days
Syp Mucaine Gel 6ml-0-6ml/SoS * 3 days
Next Steps
Review if sx persist
Health Tips
Avoid spicy foods
Do a endoscopy and confirm the same..