You don't live with the boyfriend, so maybe you won't have to stay at the shelter. They can still help you plan what is best for you and how to be safe. Yes, it sounds like he is that bad. He could have killed you tonight. He didn't have control. He might not have meant to do what he did, but he doesn't have the ability to keep himself from doing it, so he is not safe, which means that you and the baby are not safe. Would you be able to move and keep him from finding you? The people at the shelter can help you figure it out.