Nicki, it sounds like Tom is about where I was during about week 6 of my radiation treatment, minus the blood clots. On morhphine, IV what what looked like Ensure going in, not able to drink/eat much of anything because of the pain and generally looking and feeling like hell.

The good news is, I did eventually get better after a couple of weeks, and each week made some progress. From what I gather he's almost at end of treatment, and this is the hardest part. Once he's done he can start healing and things will get better.

You sound like you're burning the candles at both ends, however, be sure and take a couple of hours out for yourself in the next couple of days and take a breather. You can't be a good caregiver if you're worn out.
Bob