I don't know what to tell you on this. If my experience is any guide, you're in for a lot of pain until you begin to digest it. Personally, it woke me about at night for close to two months and now, getting to four months, I start to feel more indifferent about it. It appears to be a question of personality. Some people digest it faster than others. Some people obsess and get angry, others very sad. Some obsess about certain parts of the A (emotions, sex, kids, happiness). So don't look at others for the kind of reaction you should have, just feel what you're going through, but don't let it absorb you entirely. This is your challenge.
Feel free to describe here how you feel, and how you process these emotions. Find an outlet. Make sure you don't end up blurting out the wrong stuff to your W.
By the way, there's a section about infidelity towards the end of DR. Have you received the book?
M39 D6 D3 (at S) S 2014-09 D 2016-09
"You can't start a fire sitting around, crying over a broken heart" - Bruce Springsteen.