Helene

As Brian pointed out, the replies to your thread have not been from doctors nor can we diagnose you. I agree with Connie that you should get a nasal scope (endoscope)but my opinion is that you should get a plain old CT scan also. Definitely not a PETscan at this point as that has way too many false positives.
Why? Because the one and only symptom I had for over a year was a "fullness" in my ear that no ENT , dentist, etc could explain. I had clean endoscopes, blood work, etc etc. Yet the CT showed a stage IV tumor at the base of my tongue.
RELAX, this is probably NOT what's wrong with you. Reread Brian's post. But a CT scan would rule your obvious fear of oral cancer out so you can quit worrying about oral cancer. There is nothing to biopsy at this point.