Boy, does my knee hurt. The left one. I have pain when I flex it. So walking up and down the stairs tonight, I've been favoring the left leg, being all ginger with it. Even sitting stings a bit. On the floor, when I bend my leg to pull my knee up to my chin, there's a tension as press my leg closer to me, as if I'm approaching some breaking point.
I hope sleep takes care of it. Maybe I'll put a little ice on it.