Protecting yourself right now is important. Marriage means financial entanglement, and you don't want to be financially entangled with an active H addict. Your credit is at stake, reputation, etc. I would see a lawyer immediately. Filing for divorce or legal separation would seem to make sense here.
Note that taking legal action does NOT necessarily mean the relationship is over forever. He may eventually decide to get clean, and your actions might be one more step on the road to his bottom that makes him decide that he wants recovery. But you can't know when or if that is going to happen, and you certainly can't make it happen. Relapse is always a risk when you are involved with an addict - addiction is defined as a chronic, relapsing disease. No addict can guarantee that he will be able to stay forever in recovery. It's what we hope for, what they hope for, but often it doesn't happen. Hopefully at some point, your husband will decide to reclaim himself and fight his way back to recovery. In the meantime, take care of you. So sorry that you are going through this.