I spent some time in the training room yesterday, and came away with some good news, along with an air cast. Just a mild sprain, as I had hoped. The trainer himself did a marathon a few years ago, so he understood why I was freaking out so much. No running for 5 days, but I can hit up the stationary bike in the meantime. Whew!
He did manage to make me worry that my weekly mileage isn't high enough though. But it was free, so I can't really complain about it.
And I think the Zicam is doing its thing. My throat feels so much better. I am very snotty, but I can handle that.