When is it safe to share the news?

Erin
I have an appointment this Wednesday where I will be 11 weeks, 6 days. If everything looks good, I was thinking of going public Saturday (12 wk, 2 days). Is that too early? I'm 34 and have been trying for 5 years! I'm eager to share this magical news, but scared of all the what could happens. Thanks for your advice and support!!