LisaAnn, this very well could be a MLC. However - it does not matter if it is or is not. My W also seemed to change over night.
Do not initiate a discussion on your Relationship. Do not tell you husband what he is doing to you is wrong or hurtful. He is not thinking like the man you "know". You have to pretend the husband you love so much is on a temporary vacation, and you need to treat this new man in a way that is different. That's what R2C meant when they said what you will need to do is counter-intuitive.
Take a giant step back, and when in doubt - say less. Less is more.
Take a deep breath because this may get worse before it gets better. I know that's not what you want to hear, but I want you to feel strong and prepared. Remind yourself that you can do anything you set your mind to and that you are in charge of your own life. Stand strong as you find out what is next for you.