It won't be in code until it happens and the MC finds out. I store the creampies, but randomly determine each update if anyone got pregnant from any of them before. So basically if you creampied someone in version .04, well I might not know if that got them pregnant until version 22. So certainly if you look at the code for the update before you play it you can find it, but for most they won't find out until MC does IF it happens. Even I literally won't know if someone gets pregnant until the very update they announce it to MC lol.
Though for those worried about not being able to cum inside for fear of pregnancy, I'll just say it may be a nerve wracking update/conversation if any of them feel like they got pregnant, but it will ultimately be player choice. More of a 'pregnancy scare' for those of you who don't want the pregnancy, but it will still be quite a shock to the MC's poor old heart. Trying to make it so NO content is forced on you, more you get to experience the content you wish.
And yes, the game feels a LOT more harem focused currently, but I am working on the rewrite which should change that quite a bit, but it was so harem focused the rewrite is taking forever. I wanted to get plenty of content first by mostly focusing harem, then go back and lay out other paths better, but honestly that approach was probably a mistake(it is my first game, I didn't know anything lmao). Though Sara will ALWAYS throw herself at you lol. It's just who she is and she doesn't give a shit if you are a one woman man, teasing the MC is just too much fun for her.