Oh dear - what a hellish situation to be in!!
Why don't you take some echinacea to boost your immune system - and take vitamins and stuff. You're doing all you can.
If you are that worried stay away. It'll do you no good paniking in class. Do remember that it is the kids (who have weaker immune systems) and not the parents who have this.
As much as I hate it people refer to sick as allsorts of things - it can just mean a cold or headache...I panic too whenever "I feel sick" is said - even though sometimes it does mean plain feeling rough. I'm sure the English Language needs a few more words to help clarify this point!
I hope you feel confident enough to tackle your class tomorrow - just try telling yourself you'll be fine. Also if you do go perhaps you could sit next to someone without kids or whose kids are not ill - or maybe on your own if that will reduce your worry...
<font face=\"Arial, Helvetica, sans-serif\">Reach for the moon - even if you miss you\'ll be amongst the stars...</font>