How far along should I be before I tell?

Ok Mamas out there I need some major advice. How far along we're you before you announced you were pregnant to you children and when you told everyone in general? 
I am five weeks along and the only people that know are 3 of my best friends, their spouses, my immediate family, my in laws immediate family, and that's it so far. 
It's been so hard after trying all this time and now finally being pregnant I just want to stand on the highest mountain top and scream it.