The best advice I can give you is "get a lawyer". You need to take care of yourself financially, your H will NOT do it for you. If you do it later rather than sooner, you will deeply regret it, trust me.
Whether he comes around in time or not - you need to protect yourself and if he can't handle that - what does that tell you? He abandoned you and left you holding the bag. Do whatever you have before you are stuck with a house you cannot afford.
I know it is tough - I fought it for a long time, but PLEASE do what you have to do for yourself now.
