Freaking out a bit

Brit
I'll be 18 in September and just found out that I'm pregnant...I'm graduated, have a full time job along with the father, and I don't live with my parents anymore. I'm just so freaked out, this was totally unexpected. Don't get me wrong, I'm excited to be a mother, it's always something I wanted more than any career, but it's a lot sooner in life than I expected. The father is entirely against abortion, and while I support it for other women, I don't think I could personally do it. I'm due in early March. Has anyone else been in a situation like this and could give some advise on how to handle this? My roomate, the father and a couple close friends are the only ones who know so far. I don't know how to tell my family.