Sorry you're here, but glad you found us. This is one great group of people who will support you all through the rollercoaster you find yourself on.
First, just be kind to yourself. Stay hydrated. Get nourishment. Get sleep aids if you need them. Get enough rest and try to exercise. All of that is step one.
It sounds like your WH is doing a lot of things right and that is a good sign. Just sit back and let him do the work to prove that he is committed to being a faithful partner to you. You work on healing you.
As many will tell you, this is not a sprint, it's a marathon. The feelings of confusion and hurt will go on much longer than you want them to. There's no way around it. Allow yourself time to mourn. You will need it.
Better days are ahead. And better advice will be coming soon from other members! You've found a great place to help you through this mess and help you heal.
Keep posting. So sorry for your pain.