Well I told close family (mum, dad, siblings and really close cousins) in person by kinda just dropping it into the conversation. Same with close friends... As I was only home for about a week between uni and coming to australia I only bothered telling people that made an effort to say goodbye, everyone else just found out through the grape vine! Maybe you should make a big deal out of telling them though.. nobody believed me at all when I told them! I think they still didnt until I emailled pics of the 19 week scan (didnt have a dating scan) and nobody saw my blooming tummy!