For the past 15-16 years, my daughter tells me I hum. I don't hear it. I can't stop it. It comes and goes. I also have nightly (before bed) periods of stuffy nose which also comes and goes. My neck, which used to be long and thin, it is now gone --like a football player. I had stage IV thyroid cancer, found accidentally when trying to find the cause of the big neck. Total thyroidectomy was done in Mar '13. Cancer was encapsulated. Nothing done after surgery. Any ideas?