Are you sure about that? Because isn't that the whole point of the pregnancy fetish for most people?
Know nothing about it, but just mean that pregnency does not always meaning that fetish. Jen talks already about being pregnant, maybe it could just be story about it.
And are you talking about advancing the character's states? Because doesn't that cause bugs?
I never hacked the game states, even if i'm starting to understand it enough to allow both branches of a route to be played with same save.
It's possible to advance to a state, all is in the code, and can be done nicely. You just need to understand how routes are linked and activate all side routes to the one you're advancing. But it's a big work.
I could maybe make a mod that allow to fullfill all quests events steps from this version of the game to use it as a "start from here" on next version. Just need to trigger all states in the right order.