How do I get away from an abusive relationship with my kid?

So I'll start by saying that I'm a sahm by force. He won't let me work or even have money at all, whatever money I do manage to get he takes. He's cheating on me and I have loads of proof. He's moved me to a completely different state than my entire family, and makes it so I have not been able to talk to anyone for the last almost 5 years. I know nobody in Wisconsin, and even have to fight with him to see doctors for my newly discovered eds. He's emotionally abusive (and unfortunately I'm unable to get much proof of that except some really old text messages) and he's threatened me before when I've tried to leave that he will take our toddler son away from me and make sure I never get to see him again. He's ruined my credit, and is trying to get me to marry him by saying he'll fix it through bankruptcy. I don't want to marry him. I didn't even want to have his kid, I love my son so much and I don't regret having him. He definitely wasn't planned though. He's 10 years older than me, and I've been with him since I was 19. Before we even met in person I was raped by my ex. which he's been holding over my head for years, saying I cheated on him. I have tried to leave before, but he finds out and sticks to me like glue. Literally kept me in the same room with him for an entire year afterwards. I'm afraid that if I try again, he will get violent. I don't know what to do, I need help.

How do I get away from an abusive relationship with my kid?
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