Telling parents So I am 5w+4d and I am trying to figure out how to tell my parents. My SO and I have…

Telling parents

So I am 5w+4d and I am trying to figure out how to tell my parents. My SO and I have been together for almost 3 years and are engaged. My parents do not think we are ready to be married let alone have a kid. I want to tell them but I cannot figure out the best way, they didn't talk to me for a few days when I told them I was engaged. Any ideas on best way to tell unhappy parents?