DD: told family just shy of 9 weeks the weekend of my ILs' 50th anniversary celebration. My family found out via phone calls a few days later (I don't have any living immediate family, just extended). Friends found out around 12 weeks, work at 14.
DS in my tummy: DH's family guessed it when I was just shy of 9 weeks because I was already showing this time. Told DD at 11.5 weeks, everyone else about a week or two later.
Guess we're a bit conservative in telling people early on. I've spotted in both pregnancies, so we wanted to wait until we knew the pregnancy was viable before going public.
K & B since 10/2003
Added our sweet little C
4/2008 and our baby boy I 12/2012