I don't think it's unreasonable at this point to ask for a biopsy or a culture (or both) to confirm exactly what you are dealing with. It's been going on for a long time and has not responded to recent treatment. The only way any doctor can know for sure what something is or isn't is to get a sample of cells under a microscope.

It doesn't sound like typical symptoms of oral cancer, but something's not right. They may be able to do a scratch biopsy or something not too invasive. Once you have a diagnosis, you can get effective treatment and put your mind at ease.

Please don't hesitate to come back for support. I know it's easier said than done, but try to stay calm and please keep us posted. Here's to hoping it's nothing serious and it's something that can easily be treated/cured.

Best wishes,
Kerri