Oh Helen, you poor thing!!

Insult to injury.
You need a complete blood workup - not to scare you but to rule out.
I had a friend who's mom had lupus. She broke her ankle just putting on a boot. Could also be osteoperosis? Or maybe a hairline fracture you've had from an old injury that you tapped just right... ?
oh Hx, please keep us informed as you can. I hope someone else can type for you.

Anne