I done did some world building!
"But Spoon" I hear you cry "How can you world build when the only thing you really do with your characters is just draw them pregnant repeatedly?"
Well I built around that.

This is Pregnym, a god.
Vitaedr is their angel, Lustair their demon.

Pregnym lords over a single planet, a planet called "Edutam".
Now they say Universes branch off into many different timelines based on different events, Edutam became wedged in the splinter of a Universal-branch.
Being stuck in this position Edutam is being constantly duplicated due to the break it's nestled in.
All of these new planets however, are lifeless.
So as a god of life/fertility/etc Pregnym has been in a way locked to this planet, cultivating all of it's duplicates and keeping an eye over the place.
One of the ways Pregnym "cultivates" planets is to "fix" them, the only way it knows how, which is to fill them with life.
As such Pregnym is the reason spontaneous, rapid reproduction occurs so randomly/easily/often.
However in order to keep the original/main Edutam as undisturbed as possible Pregnym "removes" the Pregnancies, or essentially makes sure it's never fatal and always sends off the offspring to one of the lifeless worlds to populate them and then wipe the memories of the affected individual.

And viola!