I don't know what to do now.
My digestive system works, my foot isn't sprained, my back doesn't hurt, and the car now works fine.
What do I do now?
I did have an adventure on the way home. I wasn't paying enough attention to the buses and got on a #78 instead of a #41. For non-Seattlites, this meant that I was in the University District rather than at the Northgate Park-n-Ride where my car was. I'd just missed the set of buses that would go there, so I had to wait a half-hour before I could get home. Oh well. I had my book.