Freaking out !!! What are the chances ?!!! What r the chances ?!!

Sooo I have a handsome little boy who has Down syndrome. It was diagnosed after birth, I had absolutely no idea but I’ve grown to accept it and never did I question my love for him it was just a shock since I was getting ultrasounds weekly. Well I am expecting again and I am currently 21 weeks. What are the chances of another DS baby? I’m going for a level two ultrasound plus an echo to make to find out if the baby has DS or any heart defects( my son has a complete AV canal). I’m freaking out because I just want everything to be okay !!! 😢

Sorry for the pics overload lol

My baby boy

My little bean