Yes, I'm in pain now.
I was doing well until this afternoon. I had to go to the other side of the campus and down a moderately-sized hill to install a large UPS (battery backup) in a server rack. After going down, two hours wiggling around bent over or laying on a cement warehouse floor, and then walking back, the cramp in my right calf that I'd been ignoring became more obnoxious.
Before this I'd intended, and felt quite up to taking a brisk walk after work. Hope I can do at least a good walk tomorrow.