So I have been pretty sick the last three weeks, enough so that I decided, with the help of a doctor, to do nothing for a few days except medicate and rest. It seems to have worked, and I'm at about 90% now (of normal health levels).
It has meant that I dropped the attempts to keep on the training schedule entirely, and instead I'm focused on continuing to get better. When I'm at 95% or so I'll start training for real again.
In the meantime, I felt good enough today to walk down to the grocery store after work, a decent little jaunt, and snag some stuff Eric didn't know to get when he went to the store because I forgot to put them on the list. I wore the new socks, which are WONDERFUL, and was only a little winded when I got back.