Aww Jen, I wouldn't know whether to laugh or cry if I was you
Luckily some kids do fine through the chicken pox, my 2 both had them 2 years ago and the younger one was fine (which was surprising as he's awful with eczema and I thought his skin was going to go haywire). The older boy was a little sick and sore because he had them in his mouth and throat but apart from that they got through them with no major incidence.