I took the day off and spent most of it moving slowly to get showered and dressed (because I felt so toxic and nauseous at first), then laid on the floor and did all sorts of stretches and exercises to try to get my muscles opened up. I made a little progress, but as soon as they let go, they were damn sore.
I went over to my physical therapist this afternoon and she did some work on me and found that my diaphragm had tightened around the aorta and twisted it. Yeeeesh. No wonder I felt crappy and toxic. After I while, I practically fell asleep on the table and am feeling a bit better now, although I still feel like just doing nothing for the rest of the evening.