Same here. I understand what you are going through.
XW and I were mediating a joint petition a couple of weeks after BD and a court hearing proceeded in a little over 3 months. There was no cooling off/separation period at all. I think XW wanted to move on as fast as possible. She hasn't looked back since. I know my timeline is shorter than most but hell did it moved fast.
I too can't seem shake off those feelings you've described. It just haunts. GAL does help even it's just for a couple of hours. Know that good times are ahead. Look forward to that!
M35 XW34 D5 D4 M 6years T 10years Bomb 5/2013 Joint Petition signed 6/2013 Moved out end of 8/2013 Court Hearing of Joint Petition 9/2013 D finalized in 3 months - no news yet