I need help. Or to die

So I’m 99% sure my husband is cheating on me. And I’ve never wanted to leave more than I do. We act happy but really I don’t want to be with him anymore. We have one daughter and a baby on the way and i guess it might just be hormones but he literally never does anything for me. And I wanna leave but I don’t have a car. But I want anything to do with him anymore. I just wish I hadn’t gotten together with him and that I’d went off in the army. I don’t regret my daughter at all. But I wish I would’ve been smarter because he fucked up my whole life plan. And when we got together he showed me a “true man” but now that we’ve been married for a year and expecting again, I think it was the biggest mistake of my life. And honestly, I just really wanna die because I can’t get my old life back. But I wanna go back to the army and possibly get a divorce after this baby is born. I wanna get away. He does t love me anymore and never even wants to be by me. So I’m done. I’m no longer even sleeping in the room as him. I don’t want to be with him anymore. I don’t want him. This was it. He can’t even help me with one small thing. He’s a horrible husband.