Parents - do you totally over-react like this?!?

I work for a social service agency and I would highly recommend seeking a counselor. You don't want your children to become paranoid as well by example. There may be a mother's support group also that you could join which your daycare or school may be able to recommend. Your children are only 3-5... the things you worry about when they get older are even bigger than concrete. Try and seek help now while they are young so you and your family can have happy holidays! Good Luck!