I forgot to ask my ENT about the mucous!! As far as the sore throat, he said he had taken quite a bit of muscle out of my throat on the left side so my throat will probably always feel weird, and the allergies on top of it all don't help.
My dental hygienist said that the mouth will continue to have changes regarding saliva/mucous for up to two years.

Left tonsil SCC, HPV+. T2N0M0. Tonsillectomy 3-07, bilateral radiation, cisplatin 3x, Tx completed 6-06. Clear PET 4-01-2008.
Thyroidectomy 5-9-08, resulting in permanent surgically-induced hypoparathyroidism and adrenal problems. Bummer.