Beth
I wish I had found OCF back when I started my radiation TX. Instead there was just our waiting room cohort of patients watching each other get worse every week. Take a look at these posts and see that all of us made it through radiation.
It seems like forever when you are doing it, but within a year you will be the one posting to a newcomer about how you survived the Radiation.
In the meantime, as a diversion, you could Think about what you want to do with your mask, I posted a link a while ago about an art exhibit made entirely out of recycled radiation masks. Others mount it on their wall as a "trophy" or "award". Others crush it, ride it over, burn it, shoot it, bury it or just leave it behind at the TX center.
Good luck
Charm