Bill, There is a SPOHNC, Support for people with oral head and neck cancer, in Seattle, WA. With any pain, your doctors should be told, and rule out cancer, which can simply be done by exam, not 100%, but ruled out many of my concerns until my post treatment scan. Three months is still early, and can take up to two years to recover, some things never, and some things recover sooner. It takes time, basically. Keep doing what you did during treatment, not sure what, but there are many things to do that may lessen the severity if you don't know or may be doing already. Sounds like you may have had Cisplatin?

You can make your own post in "introduction" or this one moved, so you can get more responses. Good luck.