Emotional abuse

My husbands emotional and verbal abuse has increased recently. He keeps calling me a hoe and slut and doesn't do anything to help around the house or to provide for the house except paying 1/3 of the cost of rent. I'm due in Nov and all I have is a car seat for the baby. I've been looking for work but having a difficult time finding job willing to employ a 6 month pregnant woman. I'm worried the stress is affecting the baby and the fact that I've dropped over 20lbs is really concerning. I just dont know what to do. I have no where to go and I really don't want to go to a shelter as I have two other kids one who is autistic and has an immunodeficiency. So a shelter wouldn't be the greatest thing for him. My husband has isolated me from friends and family so I really have no one.