The movie linked to here (https://xhamster.com/videos/pregnant-fun...xx-1143798) is actually from a VHS porn film called Pregnant and Pumping, which I bought a copy around 2000. It features (in its first and last segments) the gloriously pregnant Rene Summers, etched in my memory as the definitive horny pregnant woman in heat; it's super impressive how she can handle herself in advanced stages of pregnancy. I would love to see a better transfer of it (I do kind of wish I had saved that VHS tape...).