when did you announce your pregnancy?

Robin
When did you announce you pregnancy and how did you do it . I'm 11 weeks 4 days, I have only told family and a few close friends. Want to do it with an ultrasound but I don't get another 1 till 18 weeks(I do have one from 6 weeks but bean was so small.  and I don't think I can hold on telling people any longer.