Good luck, Sherry. I'm where you are, only with my mil, it was heart attack followed by complications. We're still back and forth to the hospital (she's been there a week this time, and I'll be going up to stay with her in an hour or so).
Don't forget to take care of YOU, and that does include finding time to get a ride in now and then. You'll need to burn off the tension and blow out the cobwebs!
(hugs!)