Unfortunately thats not going to happen Rem is currently on a hiatus, in regards to game dev - and the writer/artist Sachinama is currently working on a minor game on the side. Meaning neither are currently looking at the game.Dunno if the dev even checks here, but adding pregnancy + nursery into base game would be amazing.
However the CCMod is pretty good alternative for the pregnancy albeit it is very "lightweight" in comparison to what a full official pregnancy mechanic would allow for.
And as for the nursery(Do you mean infirmary?) currently nothing of the sort is being made officially and probably wont be either. So fingers crossed for a modder i guess.