I don't really have any ideas but I wanted to say CONGRATULATIONS!!!!!!!!!!!!! I got pregnant pretty quickly after a miscarriage and told everyone right away as well. I wanted people to start praying for the little one as soon as possible. :-) I totally understand announcing it right away! For one of my pregnancies my two daughters put baby dolls under their shirts and then stood so that their profile was to me (so you could see that they had "pregnant" bellies) and I video recorded them saying, "We're big sisters! Mommy has a baby in her tummy!"