BUT...be careful about NC. Just because she leaves does NOT NECESSARILY MEAN no contact. The OW in my case lives in freakin India, halfway across the world from us here in Florida, and at first, when WH came home, I had D-Day, and was in a healthy Plan A, WH was going through withdrawal (I did not recognize it at the time). He too, was trying to see if his feeling "faded." About 2 weeks into no contact, OW sent him cards and letters and e-mails at work...but WH claims he ignored them. A few weeks later WH called her to "make sure she was ok" and here we go again....
But his feelings for her were not fading, and his feelings for me were not growing.
I WONDER WHY THAT WAS!!!???!!!!???!! <img border="0" title="" alt="[Mad]" src="images/icons/mad.gif" />
Anyway, this long distance A (EA) is even worse, in some ways, because the A can take on EVEN more of a fantasy element (the whole reality thing of an A has a hard time setting in when they don't have to see each other regularly, smell each others bo, farts, pimples, bad breath, the whole thing). My WH's A could just stay at this REALLY, REALLY, REALLY fake, pen pal, love letter, romanticized fantasy level...and that is where we are now.
So, NC means NO DAMN CONTACT....PERIOD.
Meanwhile, you plan A your butt off (my hat is off to you, because I would have had a VERY difficult time coping through all of this had I been pregnant).
I also know my plan a was making an impact. WH commented on how I had changed, and had turned, at the time, a lot of the blame, anger, pain and guilt inward at himself, versus outward at me (not so much the case now, but for me, it was proof that Plan A was necessary to plant those seeds of reality that you are, and can be, a good spouse).
Good luck. And take care of yourself!!!