Thank you all.

I am going to skip the dentists and get myself to the doctors again. Unfortunately earliest appointment I can get is next week. I've found a list of guidelines for mouth cancer referral so will bring that in and go through it with my doctor. Hopefully when she sees that I actually fit quite a lot of the criteria, she'll take me more seriously.

Andrew L, out of interest, where was your lymph node located? All of mine are sort of around the back of my neck/shoulder region. Are there are any group of nodes that are known to be enlarged with BOT/tonsil cancer?

-Concerned about HPV-related mouth cancer. Symptoms: multiple swollen lymph nodes and mouth lesions. No biopsy or diagnosis as of yet.