Hi- and welcome - definitelt go to a different ENT - one experienced with oral cancer. The nodes do sound like an infection or reaction of some sort likely to the rash in your mouth - there are many people here who've had palate cancer one will likely be along to explain how their cancer presented -re - the HPV thing while it may be an issue at some point - only two types actually cause OC - and generally these present in the tonsillar area in the mouth - or base of tongue (not visible to the naked eye) so if it is cancer of the palate - its likely not HPV related. It truly does sound like a rash of some sort - (btw thrush can be a bugger to get rid of... It takes hold sometimes if you immune system is compromised - and likes sugar so steer clear of it for a bit to see if that helps! ) but definitely push to get an answer it will ease your mind and put you on the path to feeling better - sorry on the loss of a family member - this disease can be terribly unfair. Take Care