Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain
sore throat, along with uncomfortable feeling in throat and mouth along with
post nasal drip and heartburn seems to be due to acid reflux..
It leads to excess mucous formation..
I would suggest you to consult a General Physician or a Gastroenterologist and get evaluated and a thorough clinical evaluation and investigations like upper G.I Endoscopy can help in diagnosis and treatment can be done accordingly..
You can be advised to take
Proton Pump Inhibitors like Omeprazole or
Pantoprazole..
Take antacids like
Milk of magnesia..
Avoid spicy food and drink plenty of water..
Always take walk after meals and take your dinner atleast 2 hours before sleep..
You should sleep with head slightly raised as compared to feet..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.