Doctor's Orders (futa on female)
Stephanie wakes up with a bad case of genital swelling. Why, it almost looks like she has a dick... She rushes to the hospital, where the staff is a lot friendlier than she remembered them being. As she's treated by the gorgeous female doctor she finds it can swell up even more, to look—and act—exactly like an erect cock.
This story contains graphic vaginal sex between a futanari and a woman.