Robin. My prayers are with Em too. I sure hope she gets better. Hopefully you'll be going over to pick her up from school today!
DS has the same thing. He's had a bad cough since Saturday with a low grade fever (he never gets a high fever). Yesterday his dr. couldn't see him until today. When he started crying every time he coughed (he's 10, and never cries!) I took him to the prompt care. Those chest x-rays were scary! The whole bottom part of his lung is full. He got the xithromax too, which I agree is good stuff.
The main thing I wanted to post is that the prompt care dr said NO SCHOOL this week (as if I would have sent him anyway!) and to follow up within a week with the regular doctor. He really stressed the follow up. We're leaving Sunday for IN, and the dr. said to have him checked before we leave.
So a professional says that this is at least a week long type recovery, and to be sure to check it again to be sure the pneumonia is gone.
Good luck!