How do I tell my baby daddy!

Hopefully someone can help me. I got pregnant in January, and when I was 19 weeks almost 20 I ended up miscarrying my baby boy. My baby daddy is un supportive, didn’t want me to have this baby, wanted me to abort it because were not together just being super childish. Let’s just say if I was able to carry this baby until it was born he wouldn’t be in his life. It’s super saddening to me because I wouldn’t expect myself to have a miscarriage and unfortunately put me through a lot of emotions just talking about it and I’m stressed which in this case will happen. How do I tell him, how would I word it? Please help.