Based on previous game, that seems unlikely: pregnancy is likely to happen, but separate scenes for distended bellies in the story arcs wouldn't be worth doing even if the dev is as focused on it as you are (and he almost certainly isn't) and the seething unwashed masses, of which I am one, would rise in revolt if any of the girls were made unavailable for late-game missions because of gravid waddling. In game dialogue around the first trimester and closing scenes with kids seem far more likely. Maybe pregnant Eva moving in to the house because MC's magical 100% sperm can cross the line would work, but that's about it.