Help?!?!?

Hi, im 16 and my boyfriend is 17. We had unprotected sex and there is definitely a possibility of me being pregnant. (We both wanted a baby) ik that sounds bad but, thats our choice. Now heres the real question.. Can my mom legally keep me from my boyfriend when she finds out im pregnant? I mean its his kid, but, i dont wanna be kept from him. Or my mom keeping me and the baby from him. Help?!