Well I bet that given how things have been handled so far, that when the tonsils were taken out, there was no biopsy done on the removed tissue to confirm what the issue/pathology really is. (Cancer can only be positively diagnosed through a histopathology microscope exam of the cells themselves).
I am confused by your comment that you have
HPV bumps in your mouth. How do you know they are
HPV related or what they are specifically? Has someone biopsied them?
HPV does not produce lesions for the most part that can be seen, so
HPV bumps likely means something else. Other than a biopsy there is no oral test for
HPV. So of course your doctors do not know how to test for oral
HPV - unless someone cuts a small biopsy and take that tissue sample, and does a PCR test on it for
HPV, but I would want a confirmation of cancer first... what caused it is a secondary issue.
Since you are in LA, I would go to the dental school at UCLA where there is a world class oral medicine specialist. She can biopsy the tissue and you will finally get a black and white answer to what this is. There is also one at the USC School of Dentistry. If you go to UCLA they also have a world class head and neck cancer department with doctors from every specialty to determine what should be done if this is the big C. But you have to get a finite diagnosis before anything else can happen.
This can also be done a VA hospitals, and if money is a huge factor, you can ask the doctors there to biopsy the tissue. For a head and neck surgeon/ENT this is not a big deal to do a punch or incisional biopsy, is inexpensive to do even if you have to pay for it yourself, and again you move towards a finite diagnosis and staging. If you are positive for cancer, this will trigger all the secondary tests to determine how advanced it is, where it is anatomically and more.
It should not be rocket science to determine that antibiotics are not working after the protracted period of time they have had you on them, and that it is likely something other than bacterial. This leaves auto immune diseases, viral and fungal infections, and of course cancer.
Most here will tell you that you have to be your own advocate, and many fought to have the tests done that showed that they did indeed have something very serious. Needless to say some also have great lawsuits for delayed diagnosis as well. Your story is all too common on these boards.