Yikes - sounds like the nasty bugs are everywhere. My three kids were off school for a week with a nasty chest thing and a high fever. Once they were better and back at school I just kept thinking please dont let me get it now I need to ride after a week locked into the house of sick. Luckily I didn't get it but most of the school seemed to with teachers and kids out for weeks on end.
I hope you will be feeling better soon. Frustrating as it is make sure you get plenty of rest.
The most effective way to do it, is to do it.
Amelia Earhart
2005 Trek 5000 road/Avocet 02 40W
2006 Colnago C50 road/SSM Atola
2005 SC Juliana SL mtb/WTB Laser V