I have stomach ache fetish
It just come naturally. Seriously, I was 5 when I realize I have this attraction (except I did not acknowledge it was called a 'fetish'). Basically I got excited and flustered seeing/reading about attractive people got stomach aches. It was not sexual, it never sexual, but once in a while I crave it, pretty much like I crave snuggled up with certain love interests. Even more.
Two of my best friends knows and support me, though. I've been told it's 'normal' but idk until this day I still weirded out myself.