Okay so

A while ago me and my bf got in a big fight and the cops ended up showing up and etc etc so we broke up for a time being but we ended up getting back together unfortunately though my family despises him and does not know we even got back together. Now I just recently found out I am pregnant with his baby and I’m not sure what to do or how to even tell my mom. I’m freaking out cause I have no idea how she will act and I live with her and I know how she feels about him. So how should I tell her? I’m panicking like crazy.