Wow I sympathize so much with you! I am new at this too and am trying to learn not to trust my gut or initial reactions. I also find myself trying to sleep thinking about my W. Often that turns to visualizing her with someone else and I feel like I am going to break down and start panicking. Then come up with plans that will make it all ok. I am doing my best to not follow through those plans and stay with the book and advice but it is hard. Just know there are a lot of us going through this and I wish the very best for you and will pray for you.
Me 41 W 33 M 2013 Suspect A 11/15 Confirm A 1/16 She moved out 2/14/16 Stepson 13 Stepson 16