Breaking the news of a new pregnancy after loss

Jess • Expecting baby #5 🌈 after losing Baby #4 at 11 weeks RIP 12-23-14
How long did you wait it how long are you going to wait to tell everyone? 
I'm currently almost 6 weeks after a loss in Decmeber at 11 weeks. We sent out Chritmas cards a week before our loss announcing our pregnancy. I'm really nervous this go round and I'm not sure how long I should wait and if I should do any type of announcements. 
Any of you done any rainbow baby announcements? Of so post your photos/comments below.