Generally just asking because I notice that everyone has a story which lead them to discover this part of themselves. Feel free to be as general or descriptive as you like.

If you mean liking having sex with pregnant women it started for me in 8th grade when I was hired to tutor a high school Sophomore with History. She was 8 months pregnant and allowed me to fuck her during our session. I also discovered I shooot insanly large loads that a condom might not be able to handle so I prefer pregnant women for that reason as well.

I'm not sure how exactly it started for me, I was a horny kid, I can remember having my fetishes since before I was 9 years old.
My mom got pregnant with my little brother in 1991, so it wasn't because of her pregnancy, but it effected my fetish.
I probably didn't know much about sex or pregnancy in the early days of my fetish, but I did know I liked and was turned on by big bellies

Personally for me, I think it all started when I was about three-ish when my mother was pregnant with my little brother. but as far as when I consciously aware that pregnancy was a turn-on was in my early teens and fooling around on various porn sites and boom here we are more than a decade later1

When my 4th grade teacher was pregnant.

My earliest memories of being attracted to pregnant women date back to 1993 when I was 15 years old. Before I learned how to draw I would trace coloring book pictures. One particular coloring book I had was about families. I traced all of the women and made them pregnant by drawing protruding bellies on them. Eventually, I progressed into pregnant porn and the rest is history.

For me when I was younger it was the science of it looking at text books in the 5th grade , the beauty that up till this point we can’t grow humans outside the uterus , the fact that there is so many process’s that go on in a woman’s body is a thing of beauty it always makes me sad to hear they feel fat, or unattractive . Yes we’re males but there is a beauty to seeing a woman growing a life inside her body becasue it’s not something you see every day.

I had the attraction since my teenage years. Noticed it when I watched movies like Star Trek V with the birth scene.

i guess it started from being into inflation/wg. it's the closest thing to real life expansion, because the woman's belly "expands" as the baby/babies grow.

Well most fetishs start as a kid or in our teenage years so yea lmao