I told most of fam and friends at 5/6 weeks. I didn't see the point in waiting. I had two close friends who both lost babies at 8 months, so waiting until 12 weeks for that reason seemed irrelevant to me. I also have an elder daughter and felt almost like I was lying if I didn't tell her. it made it a long journey for her, but it was also special and she learnt alot. now DD #2 is here, the pregnancy seems so far away and like it just flew by (even though it didn't)! xo