I want to leave but cant

I want to divorce my husband so bad. He is manipulative and controlling and narcissistic and everyday im walking on eggshells. I could go on about everything hes done and is doing right now that frustrates me. I cant talk to him cuz he turns it on me and ALWAYS ends up in him yelling at me and getting mad. We have a toddler and a girl on the way and im so emotionally checked out. I work very part time amd have nowhere to go. I have noone to talk to. Im emotionally and physically exhausted. We have no money cuz my husband doesnt have a job. He just had his mom buy him a new handgun today, i told him to make sure he tells her thank you cuz shes been helping with our bills also. And now hes pissed at me for saying that. I just want to leave. So bad.