Hi and welcome ,
After reading your history i suspect you are suffering from Oral submucous fibrosis
. It is inflammatory condition of oral mucous membrane
leading to tissue necrosis
. it presents with formation of white fibrotic bands on the cheek and lip mucosa , it makes intake of cold , hot and spicy food difficult, burning sensation and difficulty in opening of mouth are the symptoms.
It is associated with habit if tobacco and bettel nut chewing, intake of alcohol , spices and condiments . so avoid the alcohol, spices and tobacco chewing
you can start with LYCOPENE
2000mcg 2 times daily , an antioxidant that helps in tissue repair.
I would suggest you to consult an oral surgeon for clinical examination and diagnosis. This simply cannot be neglected as it may progress to malignancy.
i hope this helps , take care.