Pregnant

I just had taken a test today, my 2nd line showed up immediately. I'm only 17 and a senior in high school. me and my boyfriend have been dating for almost a year. He's in a police academy right now so I have no way of telling him until he gets home Friday. My mom never put me on birth control because she doesn't believe in it, I'm so scared to tell my mom, how do I tell her and my family? I'm so scared.