pregnancy telling family and friends

Summer
When did you announce your pregnancy?
My husband and I suspected that we were pregnant for about a week. And just confirmed it today. 
I know a lot of people wait til the three month mark to announce, I think some of them are scared something may happen before then. 
But I don't think telling or not telling is going to change anything. 
I already had told my mum once I started to suspect, so I could ask her if my symptoms were normal. 
This lady who works with me was saying that she doesn't think it's good to anounce before three months, as she think it brings bad luck.  Which I don't believe in luck so there's that. 
But my husband came home from work this morning and I showed him the positive test. 
And he took a picture and sent to all his sisters. 
When did you anounce?