Advice?

I don't really know how to use this thing. But my names Amber and I'm 17(18 on December 16th) I've known my now sorta ex boyfriend Cody for 2 years and we started getting serious last November. He's my everything. We have our problems because I come from an abusive household and have always been in abusive relationships. When I met Cody he treated me like a princess. I felt security for the first time in my life. He helped me with everything. From school to family to my barrel racing career. He's my best friend in the whole world. Now. My mom kicked me out over the summer and I moved in with him. We were perfect. But my past and insecurities got in the way. He'd talk as friends to another girl,and  specially if she was super pretty.. I'd get so jealous. Because he was too good to be true. I couldn't imagine losing him. He ended up breaking up with me a few days ago... before I could tell him I was 3 weeks late on my period.... I haven't taken a test yet because I want to wait for him to be here. He tells me he loves and misses me daily and that he wants to make things work. He's a firefighter though and his dads the chief.... so on top of trying to get back with him when his dad is telling him he can't,we face him losing his whole career if I'm pregnant. I'm really scared and I just need some other advice from people who aren't family or friends. (My mom doesn't know we're broken up because she would say "I told you so" and be an even bigger bitch... so until we decide if we're done or not she's not Gonna know)