So do I, Mercredi. And I can try and do my part for it, too. I can't complain when I'm at fault myself.-

Ahh, what you're describing sounds a bit like lumbago, actually. This sudden bolt when bending down is typical. In German, it's called "Hexenschuss" ("witch's shot") because of that sudden effect. Keep it warm, if it's too painful take a bit of ibuprofene (as in Advil), and perhaps try a salve that heats up the area and slightly irritates the skin above where the pain is; that actually helps.