Everything And Anything An Unexpecting Mother Could Want!" (Patreon)

A new maternity store has mysteriously appeared. Superstork has everything an expecting mother could need! Our eggtagonist goes to the store to shop for his twin sister’s baby shower, happy to help but with an inexplicable fascination of all the lovely stuff that the store has to offer... 

As he fills his shopping cart with stuff from his sister's list, each item causes a corresponding change to "him." 

By the time each item on the list has been picked, "he" is no longer the fitting pronoun as she's now a visibly expecting mother! Positively glowing and overjoyed by the changes she realizes just before reaching the register that she's done a goof! All of the items she's picked out was for her sister, but she's gonna need the same stuff! So back in she runs, checking off the list a second time.

[Modern setting, male to pregnant female. Might put this in Empire Bay and pick some different humanoid species depending on what people say]

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And here she is! Thanks so much for the patience, I know this one took quite a while so I'm gonna try my darnedest to pick up the pace next month <3