We've had to pick my daughter up from nursery today as she has chicken pox-for the THIRD time. Is this possible? She isn't even 2 until August! She first had it about a year ago, then a month ago. Both times it was very mild. This time she has more spots. All the sites I have looked at say you only get it once. We cannot get her into the doctors to check with them. Has anyone else had this?