I hope you buck the odds and make it well into the tx before issues arise. Rest assured, you can ask any question here during your journey and someone will likely have experienced it.
Good luck.

Bill . . . SCC - originated in right tonsil, drifted into neck ( 28 lymph nodes removed - one positive ). Radical neck dissection in September 07, completed 34 radiation tx on January 4, 2008. Used Peg. Non smoker, 61, good shape, no previous health issues. Second year PET scan - "all clear".