James, all the feelings and thoughts you have listed are normal for someone in your (our) position. You’re actually doing pretty good for only 2 weeks since bomb drop.
Don’t fret over every word, any particular conversation or even a slip up you have with your wife. By this I mean don’t be thinking the next conversation is going to fix, or end your marriage. It’s not. You just entered a marathon, not a sprint. Keeping studying and be consistent.
M: A really long time. Crisis: 5 years. She's still worth it.
Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl