Seem to have gotten my energy back all at once. Haven't needed to sleep more than 6-8 hours since Thursday, and did a normal (for me) squat workout on Friday without needing a nap afterward. More importantly, libido returned with a vengeance and urgency I haven't felt since before this all started!
I'm supposed to wait for the GI doc to schedule an appointment, but I'm impatient and ordered more blood work from PMD Labs for a whole $38. Probably have the results before I get an appointment. If the numbers suck, I'll probably call a different GI doc, since the one I was referred to is apparently too busy to talk to me.