We are pregnant?

What verbiage do you like/dislike?
We are pregnant...
We are not pregnant! I am pregnant I don't see you breaking out and puking!
We are expecting.. Yes this is acceptable 
Is it our baby when your the one carrying it or does it become both of yours after birth I know it takes two to make a baby but right now I'm providing everything for this baby so it's kinda more mine then ours at the moment