Advise Needed

After being divorce with my ex husband and having a few kids together, I got pregnant with my ex husband. He has told me that we are not ready for the baby and should abort it. I didn’t listen to him and kept the baby until I was 7 months pregnant. I then decided to agree with him to go in for an abortion. 2 years after the abortion, I got pregnant by him again, although we are still not together. He’s now telling me to abort the baby again. I told him I will not abort the baby anymore. I think he agrees Cause there’s a lots of problems between us now. Not just problems between us only, his mom has been saying/starting shit to me when she don’t even know anything! She blames and accuses me of everything. She thinks she’s smart and is trying to take over her sons life. With his mom hating on me, I’m really not sure what to do anymore and he’s trying to run now. I’ve been depressed and stress about it. I really don’t know what to do. If I keep the baby, he can not man up enough to fight for me and the kids and will always listen to his family. I know its my fault for staying with him even after divorce. Any advice or suggestions?