Had anyone else heard of pregorexia before?

There are a lot of pro anorexia sites out there. This is not surprising as woman already have such an unrealistic standard set by society as to how they should look, but it makes me so sad. Why would anyone want to intentionally harm their pregnancy? I know this sounds awful, but it makes me angry that these people can get pregnant, and abuse it, but people who would make amazing parents cant get pregnant. I wish it was the other way around :(