Regarding the pregnancy system, your suggestion is interesting. I've played games with pregnancy system before, and adding it to the game is a potentially good idea. However, right now, the game still needs a lot of development content added for the characters, which you can see outlined on her profile. Considering our development speed, this will still take a long time.
Pregnancy content is very complex, and it doesn't align with the main theme of developing the virtual girl. It's not an essential feature. We might consider adding it after the main gameplay loop is completed.