I know this situation all to well.

When I was pregnant with my son, I was still with my ex, and it was so difficult to choose to leave. I did eventually after he shoved me into a counter stomach first at 7 mos pregnant.

I still tried to keep him involved for a long time because much like you I feared my son not having his father in his life. But in the end, I gave up.

I know we as women always think "but what if he grows up to not have his father", and its a valid question. But think of it this way - what if something happens and you lose the baby or injure the baby in some way that he has a permanent disability - he could end up not growing up at ALL.

And though the child may have periods of anger towards you for "taking his father away", i can tell you right now that eventually he will understand and be very happy you did that to protect him.

I am very worried about your situation. It sounds like its on the brink of becoming extremely dangerous. It only takes one hit in the wrong place to miscarry. And you should not put up with his treatment of you. You and your child deserve infinitely better treatment.