I'm so sorry to hear about your situation. It seems to be that you obviously love this guy very much. But again he is really not respecting you in anyway what so ever, and looks all awfully familiar that he is trying to blackmail you, there is bound to be more to come.
Have you spoken to anyone in your close circle or a close family member about it? Are there anyone else that you can actually stay with for a while until you figure out the situation? Don't loose yourself in all these and put yourself down, you must be stronger then him! But yes don't get into any direct confrontation with him because it's really not worth having an argument with someone like that. Be quiet about your plans to leave if you have any, then run as fast as you can and don't even let him know where you are.
I hope you will get the best solution out of this very soon! Thankfully, you are still yet married!