I know the anxiety is a big issue when this all kicks off, ask your doc for some Xanax, really takes the edge off the racing mind/pounding heart anxiety attacks. And I will say what everyone else here knows, DO NOT spy/snoop/etc, it will only make you feel worse.
And for keeping busy, try hooking up with friends, watch a movie, get out the house and GAL. After a while of doing those kinds of things you will even stop thinking about what your W is doing all the time... You need to get YOU back before your W will even notice that she might want you back.
You are still in the early days, a good, positive attitude (PMA) will help a lot and, if you follow DB principles pretty well you will not be adding pressure/reasons to your W's book of "why I should leave".
Great that you found DB early on, a lot of us come here after we make all the usual mistakes of begging, pleading etc.
Brad
Me: 35 W: 34 S8 & S5 M: 11 IDLY: 08/2007
"Freedom's just another word for nothing left to lose" - Janis Joplin, Me and Bobby McGee
"Life is not about waiting for the storm to pass, it is about dancing in the rain!"