Almost Four months ago, I have small white ulcer like spot in my mouth , I used ulcer gel to recover it but it not heal , I scared and continue to use it and then that spot worsen , thereafter where I rub the gel that other near part also have ulcer , so I continue to use gel and other over the counter medicines , but It does not heal, I am having still having the problem , skin is soften very and on some part when I touch , I am feeling very much pain . Pls. help me in solving my problem… I meet several doctors ( dentists, and Periodentist) and ENT. They are saying , it is nothing … What is the reason it not healing ?