Abuse gets worse with time, and the most dangerous time is often when leaving so please plan carefully and keep yourself safe. A women's shelter may be able to offer suggestions, even if you don't go there. Maybe give them a call and find out what to do in an emergency, if you have to leave in a hurry.
I am so sorry you are going through this. You deserve none of it and sadly, it will affect your children. Children of abuse often become abusers themselves, or a victim. This doesn't have to be so.
As overwhelmed and hopeless you may feel, please know that you do have options and there is help out there for people in your situation.
My prayers go out for all of you.
Hugs