Somewhere in an underdeveloped portion of Asia, there was a lady who would wash up in a lake and swim there for hours. One day her tummy seems to be getting larger, and she realizes she's pregnant. It gets bigger and bigger, coming into what seems like the final months. 9 months pass and still, no labor. She passes out all of a sudden and is brought to a hospital in the city.
It turns out there was never any baby. Found inside her was a bunch of leeches, progressively multiplying themselves and forming an ecosystem inside of her.
Author Information: Unknown
Story Title or Titles: Pregnancy, Swimmer's Pregnancy
Original Source: Unknown
Date: Unknown. Posted by Kain Pathos Crow at the Foundation wiki on 1 Aug 2008.