Jon awoke. He felt all over his body a sort of dull pain that he was becoming rather familiar with. He also felt that he needed to evacuate his bowels through the various orifices designed and suited for just such a purpose.
Jon wondered exactly why he was puking so much, and things felt different, so he wondered what kind of visible changes could be seen or felt so far, and decided to examine himself, after wiping the spittle from his chin of course.
Once he was relatively not-spittle-covered he... heard a knock at the door, "Honey? Is that you in there?"
Jon grinned, "Yeah mom, I-" he moaned as nausea overcame him momentarily, "I'm fine." He did his best to ignore the way his voice sounded strange, mostly by virtue of his sore throat.
His mother hmm'd in amusement for a moment, "Right, well while you're in there why don't you get a shower? And don't put those pajamas back on, I'll leave a change of clothes outside the door for when you're done, alright hon?"
Jon chuckled, "Yeah, sure mom." Jon wasn't really sure if he felt up to standing for any period of time, but agreed that the slime covering his body didn't feel very hygienic.
Besides, the strip-down would give him a chance to get a closer look at his body mid-change.
His shirt, which only really passed for a pajama shirt because it was the only shirt he used for that purpose, at this point seemed to be less a shirt than it was a rag being used to soak up the slime coming from his skin. Indeed it seemed to stick to his skin before he finally managed to peel it off.
As he was getting his shorts to come off he had his first major revelation. And that revelation started with the realization that his chest felt funny, which caused him to look at said chest empirically and realize that...
'Of course, MORFS rule number one, at least one male character in every story has to become a girl, and it's usually the main character. And I guess that means me. Wow I feel important.'
With this thought in mind Jon decided to take this suspicion in mind when he stripped his pants and underwear away, discarding them atop his old bedshirt.
'Yup, that clinches it. Wonder if it still works to pee with?' Jon's penis had... well, shriveled, it could hardly be called a penis anymore, really, and his scrotum, though it was still there, was well on its way to being gone. He wasn't really sure of most of the mechanics of how male genitalia became their female equivalents, but he was fairly sure that that was what was happening to him now. Even his hips seemed to be flaring out, his torso becoming slighter practically before his very eyes. In fact his hands seemed smaller if he measured them right.
So it was that, with a sigh, he, Jon, who was well on his way to becoming a she, decided to go get a shower.