please help me, anyone....?

I recently just broke up with my boyfriend I was living with from September 2013 to January 2014. When I moved back home with my parents 3 hrs away from where I was living, I found out I was pregnant. I contacted my ex as soon as I found out but he insisted I was lying, denied the baby, said it wasn't his. He also happened to have a new gf within a week of me moving out and even put HER on the phone to tell me my baby is not his, when I know for a fact it is. I finally gave up on him. That aside I've known for several months, even before I was pregnant that my family is moving to Minnesota. I currently live in Arizona and im 11 weeks pregnant. My family is set to move in 2 to 3 months. The father of my baby lives here but 1. I have no means of support and living here if I stay behind and 2. I have no reason 2 stay behind because my ex isn't involved. What do I do? Can I move? What if he tries to get custody when I move? Child support? DNA test? I'm so confused.