Depressed

So my boyfriend and I have been together 3 years and have two boys together (ages 4 and 1) and I'm currently pregnant with #3, 14 weeks. He's been a real asshole lately. We don't live together and havent for a year because we will literally kill each other if we do. Well he works 2nd shift and just been giving me wicked attitude because he wants to move back in but I won't let him. Keeps telling me he hopes I lose the baby. (I have a subchronic Hemorrhage, two large clots around the baby) and he doesn't help me out with our two boys, with money or just helping in general. Well he broke up with me on Wednesday and hasn't seen us. He literally has nothing to do with me and has always just treated me like a friend. It's weird. I was married before him and left my husband of ten years for him. Big mistake. I really don't know what to do. Guess I should let him walk away since he doesn't benefit my life or make me feel like he loves me anyways. He's a very selfish person and I really hate him lately.