We are back in Ohio and, in some sort of Thanksgiving miracle, when we got to Urgent Care we were the only ones in the waiting room!
It still took an hour and a half (with bonus chest x-rays) for the doctor to determine that Michael is most likely coming down with pneumonia. I am not generally a fan of throwing antibiotics at a situation if not absolutely necessary - but the doctor said if he was coming down with pneumonia and we left it untreated it could get worse quickly. Given that we only slept two hours or less at a stretch last night, I was not terribly interested in worse.
For now Michael is sleeping peacefully. We've got instructions to keep him calm/restful for the next two days.
I will try keeping him glued to the couch with Christmas movies and books for the next 48 hours. Not such a bad sentence.