Nate

Let me suggest another way to look at this. You had 47 nodes that showed zero signs of cancer. That's very good. So your cancer had only spread to two nodes and those have been removed. With a Stage II DX, surgery and now radiation, no reason for you not to make a complete recovery. Trust me that you would much rather have radiation now rather than have this cancer come back again later.
Follow the advice here about TSH tests, etc and you will be good to go. Radiation is not an easy road but it beats the heck out of recurrence.
Charm