I told my bosses right away but we're very close knit at my work. You can't hide anything lol
I told my boss right away and he is so excited! He bought us a $400 crib and everything. He still expects the Sam amount of work tho so I have to work him on that lol
Unless it's affecting your work with morning sickness etc. I would wait until twelve weeks you can do about everything while you're pregnant that you can do any other time at least until you are much farther along then things become a little bit trickier. . .
I waited to tell my boss & family for 12 weeks, friends etc. for 20 weeks. Something happens before then there is nothing that can be done anyway.