Yes, depending on how long game will be (and only dev knows) then it may be a tad too early for pregnancy.. at least for the main girls who are in a majority of scenes. As you say, the two sets of renders for a number of girls can be very time consuming.
By the way, did anyone notice a change in Emelie's body? In last episode, it almost looked as if she were showing in a few scenes. I've nutted inside her at every opportunity.. just can't help myself
I wonder if I didn't nut inside would changes have not been there? Haven't tried an alternate playthrough to test.