Sadly 14 weeks for this second baby. Maybe 18 weeks for#1.
I am so glad this thread came up today. Just went to kids party on weekend and a number of play group mums were really indiscreet when they realized I was 'only 18 weeks'. Someone with twins asked if I knew for sure I was only having one..... Now I remember what I didn't like about playgroup! Usually DH takes our son while I'm at work.