Baby #2

I have no supportive friends or family to talk to. I am going through a rough time right now I have a 4 month old baby girl and I just found out im pregnant with baby #2. Me and my child’s father live together and this baby is also his. We are together but I’ve been trying to save up money to leave. It’s hard because I have to do it behind his back and it’s not very much. I want to get out of this relationship so bad it’s so toxic I’ve been with him for 5 years and I’ve always wanted to leave but it’s really hard because he doesn’t take me seriously if I tell him to leave. I didn’t want to have more kids with him but if I don’t have sex with him he gets really upset and guilt trips me. I am aware that he is mentally and emotionally abusing me. He has done countless things that are absolutely not ok including posting pornographic pictures and videos of me on Reddit on wife pic trading groups behind my back. I know I can sue him for it but I don’t really care to my priority is just to not be with him. Please do not suggest abortion. Abortion is not an option for me I do want this baby even though it wasn’t planned but I don’t want to be in this relationship and it’s so hard to get out of because I am a SAHM and he financial provides and I don’t want to screw myself over by telling him to leave. What do I do?