I don't know your whole situation, but I will respond about this last post.

Of course you can't help but worry about the OW. You always will until you are back with your husband fully. When you are, he will reassure you and you will ask to be reassured. He will do whatever it takes to repair any damage he caused. Until then, you have to follow your plan.

Him asking you to come with the other wives is VERY promising. He didn't have to do that.