“Pregnancy” is one of several “unfamiliar kink”. All dialogues and scenes in this game are based on our familiarity with certain kinks and theme. If we (the devs) are unfamiliar, or uncomfortable with any particular kinks, we can these kinks “unfamiliar”. Rather than writing half-ass dialogues on the kinks, we don’t incorporate them into the game entirely until we figure out how to develop cohesive dialogues.