Difficult decision

My bf turned on me out of a sudden saying we should live apart. He then started threatening me that he's gonna take custody of the baby once its born since he has his Masters and will be working and I haven't even finished my bachelors even though we are the same age. I have a history of being suicidal and depressed with suicide attempts and I know he'll use my mental state and PTSD against me. As a matter of fact that is what's he's banking on. Saying that I am unfit to be a mother. Now I understand why his other babymomma (that kid is now 13) ran away to Mexico and didn't give the kid his last name. I'm only 8 weeks and I cant believe hes already threatening me to fight me in court until he gets his way and I obviously wont have any money. He got me pregnant on purpose without even telling me and now I see that he only used me since his bm was texting him saying she was glad the kid had someone else to call "dad" instead of him. That same day he came in me. He also hates my mom and says the craziest things like I know your mom tries to poison me (because he was having chest pains after eating a popsicle she made) when i haven't even bothered to tell my parents that I got back with him since they wont be happy. So yeah how is she gonna send him poison when the things she gives me she thinks are for me. I really don't want to be going through this. Its my nightmare. I wanted to ask you ladies how much it would be for an abortion? I am 28 yrs old and live in Illinois. I know they say it can vary by income but I don't even have a dollar to my name since he's jealous and paranoid and doesn't allow me to work.