Starting new nanny job pregnant!

[Seb101]

Hi all,
After some advice.... I have struggled with infertility for years. I recently did another round of ivf. My current nanny job is finishing next month, and I've been job hunting for a while. I went to an interview and have been offered a job. When I went for the interview I was in the middle of my ivf cycle. I was asked at the interview if I intended to have any more children (I already have a 5 year old) I had to lie and say 'no.' I have now accepted job and am due to start in two months time. Two weeks after accepting job I found out my ivf has been successful!!!! I absolutely over the moon happy.
BUT now I am due to start a job pregnant! By start date I'll be 12 weeks!
I can't afford not to work! I went for job believing ivf would fail, as it always has before!
Part of me thinks I should be honest, tell them, and let the
find someone else. But I NEED this job. I feel terrible because the family have cancelled there previous childcare and will be stuck if I let them down. But if I start I will only be able to work about 5 months max, then I'll have to leave. The family made it clear they wanted a long term nanny, and I reassured them I wanted this too.
Any advice? I'm torn between doing what's right for me; start job and leave whenever I need to, and putting family first by telling them and them most probably withdrawing job offer. No contract has bee signed yet.
Help! .......

Alternatively, since the contract hasn't been signed yet, see if you can get a short term job for 5 months and then tell them.

They won't be liable for maternity pay, she won't have worked with them long enough. She will have to apply for maternity allowance to the relevant govt. body

PeachyP, why let the facts get in the way of a good personal attack?

But FYI even if the parents were liable for SMP, it's reimbursed by the government.

Haven't RTFT but I think you've got every right to start the job and not tell them until you are legally obliged.

If you know that you aren't coming back, the decent thing to do would be to tell them that when you go on maternity leave - in writing - so that they can advertise for a replacement, not short term maternity cover.

Very best of luck with your pregnancy.