I want to leave

My husband is emotionally and mentally abusive. I hate him. He guilts me for things that he shouldn’t, that I have no control of. I looked at him today and I guess he just decided it was time to be mean. He asked what I wanted and to stop looking at him. I literally glanced at him, nothing more. How could someone be so horrible when they used to be so amazing? Our relationship is the worst it’s ever been yet our baby is due in just a few weeks. Idk what to do.