Thanks for all your advice everyone. I have decided to tell them after Easter. think I will be around 14 weeks then, but I will play it by ear as my boss is very up and down in her moods and 2 people have already left this year and there are only 10 of us. They know I have been trying, and they may even be onto me as I haven't be feeling great, but haven't told them. Only had one sick day, unfortunately it was an important day I missed. I know they will be happy for me......will let you all know how I go.