Your marriage will never be the same as before the A, but I can't say that has to be the same for the love you both have for each other. Are you sure his A is truly over.
You cannot force him to go to MC, but you can go to IC. I would encourage him to go to IC on his own, too, to try to figure out why he did this in the first place.
You are only 2 weeks out. Everything is raw. Make sure you are eating, drinking water and exercising as much as you can. Get someone to help you with your boys so the two of you can have alone time to sort things out, or at the very least talk. Communication is key.
Your boys are young enough that they won't know what is going on...only that Mommy and Daddy are very sad right now. Try to keep arguing out of their hearing. Give them extra hugs and kisses.
Work might actually be something to take your mind off of things for several hours a day. I know sometimes people look at work as a welcome distraction.
There will be more advice coming. I just wanted you to know that we are here for you, and I am so glad you found us.
You're only two weeks out. This can take 2-5 years to get to the point where you feel human again. Don't be too hard on yourself.