A diagnosis!

On Friday night, Alex's temp started to rise again, but we got it under control. We continued giving him motrin, throughout the day on Saturday but did not wake him last night. Today, he seems to be fever free. BUT he has started to break out in a rash all over his torso and back. After some research on Google, I found that he has the classic symptoms of Roseola. A virus that starts with high fever for about 3 days and ends in a rash once the fever breaks. He also had some of the other symptoms... runny nose, cough, ear pain, and diarrhea. And because it is a virus, we just have to wait it out.
The incubation period is about 10 days, so we suspect that Ava may start to show signs at some point this week.
We are relieved that we have found the source of the problem.
Robert has his 3 year check up with Doctor Novak tomorrow, and we can discuss it further with him then. I am sure he will be relieved as well since he was just as baffled as we were when it came to this illness.