I'm 17 weeks pregnant and I feel so lone, betrayed, and hurt

I'm 18 and my boyfriend is 24 and he does every single thing to hurt me from names to telling me to get rid of the baby and even cheat on me and telling me it's my fault and he been cheating sense we started dated. His my mom told me to not worry about him and focus on my child but to be honest it gotten so much and I decided I'm leaving and going back to my grandmother cause I can't be sad and worrying all the time it ain't good for me even if I try to egnor him and stay in my lane he comes in my lane and breaks me with hurtful words and sometimes even hurting me so I'm going to leave and raise my child alone