There is an F-preg tag on AO3

[potentiality_26]

I'd noticed this before, but I was reading Classification Error (which is lovely, BTW) and it really struck me.  I mean, what happens in the story isn't exactly a normal pregnancy, but like I say I'd seen it before, and in het stories (I think the first time I saw it was in a Hermione/Snape fic rec, where her pregnancy was referred to as F-preg).  It seems to me that one could just tag it 'pregnancy.'  That is, in fact, how pregnancy normally goes.  Calling it F-preg makes it sound like it's "that thing that's basically M-preg, but with a girl."  We might even be getting toward a place where we're not expected know if a man or a woman is going to be pregnant in a story unless they tell us who at the outset.  Which- by the way- is fantastic.

Anyway, takeaway message: Classification Error= lovely and leveling the pregnancy playing field= fantastic!