How do I tell my children I am pregnant again?

it depends on their age. With younger children, simply start talking about babies. How cute they are, how fragile, how meaningful, and how much you love the ones you already have. From there it should be easy to just say, "That's why we'll have one living here with us soon", or something along those lines. With older children, let them know how much they mean to you and then just say it. Try not to beat around the bush as much with older children, since that can make you sound unsure of your choices. In both cases, try to be as clear as possible.

You could ask them how they would feel if you where and then tell them guess what moms pregnant but I guess it depends on how old they are. If there younger it would be better to explain it but, if they’re older mabye takeing them somewhere and doing a cute reveal,like poping bloons with it pergent confetti in them?

Find a quiet moment when you are relaxed and not rushed. Then just tell them in an honest and direct way. Be ready to answer question as kids are curious creatures.