I am currently 32+5weeks pregnant with my 3rd child. I have definately had chicken pox as a child. Neither of my boys have had chicken pox or the varicella vaccine. I have been informed today there is a case of chicken pox in my 2yr olds preschool class. There are also other cases in other classes. He attends 2 mornings a week. Would it be advisable to keep him home from preschool for the last 3 days of term to prevent risk to the baby?