What are laws on teenage pregnancy in Virginia?

I am 15, and my boyfriend is 19. I am almost 7 months pregnant now. Me and my boyfriend both live with my mother, and she's been letting him live with me before i was pregnant. She knew we were having sex when he moved in, and she still let him. I have tried living with her, and reasoning with her but shes out of control. She's an alcoholic, and a druggie. She smokes cigarettes, has abused me, and is constantly stressing me out and yelling at me. She's causing me so much stress that I'm afraid i will loose the baby. Is there anyway i can move out with my boyfriend? His parents would take us in and let us live with them. I don't want my baby growing up in this house, and need to find a way out, is their any way?