I've just found out I'm pregnant and am worried about telling work. I've just joined a new department so I don't know people that well plus it's a very male-dominated environment. I'm thinking of keeping it a secret as long as possible but I'm already feeling dog-tired and a bit queasy (I'm six weeks) and would love to be able to explain why. When did other people break the news and what sort of reactions did you get - should I just bite bullet and tell?