I feel so helpless..

This whole pregnancy so far has been a whirlwind for me. I told the father (he has 8 children already, this will be his 9th. I'm just finding this out. I have 1 a 16 year old and this will be my second yes I'm starting over) i know i know thats a lot I thought but he doesn't think so. I found out December 31 and I'm due September 02 or 03. 7 weeks today. I guess I bit off more than I can chew. The child's father has lied his way into my life with promises of something better. So far NOTHING.. Working when he wants, using my home, car like its his. And when I try to scale back every thing is an argument. Hes not a talker about anything no opinion about anything. We can't even talk to each other. He is so concerned with everything else that goes on in the home. Other than what I truly need.. He doesn't mesh well with my family members who live here and honestly I feel like I have made the biggest mistake of my life. I know ALL children are a blessing so I'm trying to just make it work. And at 35 he's 41 but I'm just ready to give up.

Am I wrong for just wanting out? I don't feel there is change here from him. What can I do to make this situation better for me and my baby?