Tongue pain and burning sensation. Away?

I have an anxiety history and taking SSRI 5mg daily. From past 2 years I have been dealing with tongue burning sensation which started very painful but later subsided and gone, now it comes back sometimes when I remember about it like a memory gets click. I had been to oral medicine and Dr said it is anxiety after treating me for oral infection but they do not found any physical issue. My psychotherapist says it is anxiety, now from 4 week I am having a nerve pain not burning on the side edges of my tongue sometime on left and then right, I can feel more pain if I touch it with teeth. The pain subside for sometimes and comes back and I am so anxious that is this will go away? I did not found any expert in Mumbai India for the same who can provide me a solution for it and I am scared right now. Do not know what to do