Excruciating pain in Mouth particularly when speaking

Hi I have excruciating pain inside my mouth on my inner cheeks particularly when I talk but a milder pain is there 24/7. I am now 95% certain it must be TMS - numerous tests/ specialists and there is nothing medically wrong. The stumbling block is that I find it impossible not to focus on the pain when I talk - as every word hurts and also not to focus on the pain when not talking as it feels that anything on the face is so present in your awareness. I'm aware that such a constant focus on the pain makes it worse/ isn't ideal for healing and I wondered if anyone could me me any advice on how to deal with this or if they had been through this. Big thanks and love to everyone on this inspiring website.