DS is due to go to his friend's birthday party tomorrow, but I think there is a high chance that DS is incubating chicken pox as 11 days ago he played with a boy who came down with chicken pox the next day. DH thinks we shouldn't let him go to party as, if he has caught it, could be becoming contagious around now. I think if he is not showing any signs then he should go, as you can't live your life not doing things 'in case'. Who is being unreasonable and what would you do?