He's 3 and he's right, I'm 6 weeks. It's high risk though so I didn't want to tell him until 12 weeks. Luckily Dh was there and gasped "there's a baby in my belly?" which turned it into a joke with DS laughing.
I didn't know what to say, I just didn't want to tell him yet because of the risk but I also don't want to lie to him. Has anyone got any advice on what to say if he mentions it again?