Yeah, the polite and friendly interraction - I find it "chilling", personally! I think again NMs advice is right...remember things aren't going to feel good or resemble the old days (if they ever will) overnight... think weeks and months.
So, what are you going to do with your weeks and months? Again, NM has it. Have your baby, take each day (or hour!) at a time. Don't concentrate on missing H. Concentrate on how brave and strong you are to be doing this alone. Sometimes I recall something someone wrote here (sorry that's VERY VAGUE!) - "there are times in life when we need to do things alone". This is one of those times.
It doesn't mean there is no hope. We just don't know what the future holds.
You have been doing so great. You will continue to do so. I have a lot of hope for your sitch. Your H is more involved than mine or Gatsby's. But you gotta get strong again, BD! Be the light that draws him back. Be strong, attractive, think of all the wins you have had recently!!
Keep doing what works! You are on the right track.