Wow! Just so sorry to hear that you have been sick and in pain.
Here's hoping that you have the very best nurses and doctors looking after you. (You know, the ones that warm up the stethoscope before they put it on your chest!)
I always enjoy the detail and history that you provide to spice up even the most mundane conversations. It is horrible that you have a kidney stone because they are so terribly painful, but I think I speak for some of us who are (selfishly) glad you don't have any kind of brain malady. The loss of that incredible memory of yours would be a great one indeed!
Hope you are back very soon, teaching us all, as you do so well.
