Thank you, everyone!
MomOnBike, no fencing here since I was a teenager. My main exercise is usually cycling, which I haven't been able to do recently. Well, I'm also shoveling, these days, but I'm looking forward to giving that up as soon as possible!
All, I'll definitely get it checked out. Probably in June, because that appears to be the soonest my street will see a snowplow....
As I was getting into bed last night, I barely barely touched my left knee to the bed (having forgotten that I shouldn't do that) when the burning started. Of course I immediately stopped what I was doing. I just cannot get over what a completely weird sensation this is; such a strange feeling!

