In need of opinions

I'm in need of opinions. I feel like I'm stuck in a hole. My boyfriend and I have been together for over a year. We have a house together and a couple animals to start off out little family. Recently we found out i was pregnant. We werent necessarily trying, but we werent using protection either. But.. his family cant stand me. They show me nothing but disrespect. Even tho I have show them all respect since day 1. And have even gone out of my way to do things for them. So with that, does anyone have any ideas on how to tell them that I'm pregnant? Maybe a calm way, so they dont really freak out? ??