You'll feel much better after you see an attorney. Your husband's threats are just threats. Where is his own attorney's payment coming from? Is he honestly going to say he has gotten accustomed to the lifestyle you have given him and he deserves to continue it? You can certainly sit there and explain to an attorney and a judge what that lifestyle actually is for both of you.
What he can and can't do are is your unknown factor. The unknown factors are scary so just ignore his threats til you find out. He doesnt know, you don't know. Go find out and make a game plan. There may be reasons to stay with him but threats are not one of them.
Either way, be strong! I wish you all the best!