Once upon a time, I was reading through a giant recs list and my computer died and I lost ALL THE BOOKMARKS.

Now I am looking for one of the fics from it for a friend.

It was genderswap, set probably during 2nd season, I want to say.

Dean disappeared and Sam FREAKED. He came across a girl named, if I'm remembering correctly, Karen (it COULD be a different name). Karen claimed to know him through visions and be one of the 'special children. Karen ended up traveling with Sam as he searched frantically for Dean and seemed to have an odd combination of grace and clumsiness. Karen ended up hunting alongside Sam and the hunting community got to know her and approved of her as a match for Sam. Sam fell in love with Karen and Karen discovered she was pregnant. She hadn't told Sam yet.

At that point, Dean reappeared and Karen reappeared. Dean wasn't quite the same, Sam freaked out that Karen was missing. Dean finally reveals what happened.

He was turned into a girl by something (can't remember what) and he was told to stick with his brother and that he'd eventually find the solution to him being turned back into Dean. The trick was, if he told Sam that he was Dean and not Karen, Sam would be killed instantly, so he HAD to be Karen. And it was horribly tragic because part of Dean had, while he wasn't happy being a female, wanted the baby and Sam goes to find the only ultrasound pic that exists because (obviously) the baby disappeared when Dean became male again.

I think at the end they're happily sexing as dudes, but I'm not sure.

PLEASE help me find this? It was REALLY good.