Hi Sara,
It's not really bad news - it's pretty normal to feel like crap when you're done with treatment. Most of us did. The following several weeks post Tx, for me, were the worst part of it. The thick mucous will eventually stop - for most of us pretty suddenly around 3 weeks. The treatment really kicks your ass.

I also had anemia and low WBC which totally screwed up my sensation of hot and cold. One minute I was freezing and the next burning up. I sat there with a pile of blankets in one hand and the remote control to the ceiling fan with the other. That'll pass too. The red blood cells replace themselves every 120 days.

The best advice I can give you is get plenty of rest, manage your energy carefully, watch for infections, thrush (especially since he's taking antibiotics), and stay on top of nutrition and water intake (2-3 liters/day).

Hey -but you're DONE with the mask already -that's a good thing. Completing treatment is great as well. Congratulations! Hang in there -it'll get better.