I was woken up the night before last by my left foot shooting out unbearable pain signals.

I tried to ignore it and go back to sleep, but it wouldn't quit. When the alarm clock rang and I tried to get out of bed and put my weight on it, it was so tender I almost collapsed.
So I hobbled into the bathroom, put some Voltaren cream on it, took two Voltaren tablets, and tried to get on with my day. By breakfast time, I could walk more or less normally, so I went to the office.
But I was so exhausted that by 2:30 pm or so, I could not keep my eyes open. Luckily my boss saw what was going on and sent me home. So I washed my face, drank some water, and got on my way.
Unluckily, I had a rehearsal last night. I drank more water and had a chocolate bar to stay awake and managed it, but my voice cracked twice before repairing itself. I've never had my voice cracking even once after reaching adulthood. I've no idea what to make of that, but it's not good.
Luckily I got home OK and went straight to bed. This morning, everything seems fine - still tired, but fine.
I'm WFH for the rest of the week, so I think I'll take it easy today.