I had it as a two-year-old, but very mildly- apparently I only had about six spots and wasn't poorly. Will I
still be immune, or is there a chance that a mild case won't have passed on immunity? DS has it now and I'm 15 weeks pregnant, which I know is just about the worst time to be pregnant in terms of the risk of complications for the baby were I to get it. Just wondering how worried I need to be...