Interesting! This subject has so many angles. Agree with comments about boundaries between acceptable fantasies/fetish and controlling behaviour.

Many years ago, I worked with a woman who had a pregnancy fetish. Something that's more common than I realised. At home she'd frequently dress up, simulating various stages of pregnancy. Admitted the next stage was labour and birth, her state of mind even prompting pains. Wanted to take it further and go outside, but feared getting caught by people she knew. Being single and childless probably fed this need.

Porn site accessibility has provided the opportunity to publicise these activities. As the saying goes, what we do behind our front door.....