Hey Dawgy. I really feel for you. It's been a little over a year for me that my W left our bed to sleep in the spare room. At that time I had no idea she was having an A. (Then last November she moved out and I still didn't understand. I thought she just need to have some space. Then in Dec I discovered the A.)
I was so used to sleeping with her. When she moved out of the bedroom she said it was because I snored and kept her awake. Lies.
I know this is a tough time for you. Stop thinking about it even for a few minutes if you can. Do something to occupy your mind. Spend time with the kids. Sleep. Eat.
In one way, the sooner she moves out the better. At least then you will have some space without having to look at her lying face.
M: 59 W: 53 M: 9 yrs T: 14 yrs No kids together but D30(hers), S27, S24, D21(all 3 mine) W moved out 11/18/2013 D-Day 12/14/2013 W moved back home 12/1/2014