I told Joshua (13) pretty much straight away from when I found out. Funny you say your kids don't think you can have kids unless you're married cos when Joshua was younger he had the idea that when you got married you had a baby...lol. I would say that they should be cool and I don't think it'll be a shock so much as more of a how IYKWIM?? I would definitely be telling them though so like you said, they don't get upset by someone else saying "my mum said....".

Are you feeling better and have things settled down for you now??

Let us know how you go