Blue Rose has offered excellent suggestions and it is now a choice for you to either continue tolerating the abuse, or saving your Self and your precious child and unborn baby. It will NEVER get better, even if he's addicted and is excusing his abuse on that. You are not responsible for anyone else's adult choices except your own. You are also responsible for the safety and well-being of your children since they cannot help themselves.
By making that call or visiting http://www.ndvh.org,
people will provide you with options and resources, including legal assistance. If I could make it out of an abusive marriage, you can, too.