I told the restaurant owner at about 5 weeks, when I found out, and my chef about 3 days later, but that was only because I work in an environment where I need to be on restricted duties, and I need to be able to manipulate my very long work hours for appointments etc....I also wanted them to know so that if I did miscarry then they would know why I needed the time off. I had only been there for a few weeks when I found out, and felt it was important to give them as much time as possible to plan for the future.
DF wasnt happy about me telling them, but it had to be done. We told close friens and family then too. DF didnt want to tell people until we were 12 weeks, but I honestly knew I wouldnt miscarry so couldnt contain myself! lol