I was just about to post the same qn! I'm 6wks and have so far told my sister and midwife friend (she guessed!?) in Aust and my karate teacher here... Waiting until after next Dr visit to tell family. DH thinks the 12 wk thing isn't important for friends too; I'm umming and ahhing... I've been lucky enough so far to have no m/s so it probably won't be obvious, but don't know if I can keep it a secret for another month and a half for friends!