Looking for a girl!Dean story

[stageira.livejournal.com]

My brain is like a sieve these days (it's not my fault, the huge amounts of fic is to be blame for that!), but am looking for a genderswap story.. , where the Trickster (or whatever passes as the Trickster), changes Dean into a girl and sends him out to live with Sam.
Sam keeps looking for Dean, but takes girl!Dean (I think he chose the name Karen? Not sure about that) with him. Sex, love and misunderstandings happens. What I remember very clearly from this story is that girl!Dean was pregnant and had an ultrasound done, but he/she gets turned into Dean again and the baby is gone. Sam finds pics of the ultrasound and gives themk to Dean. I know.... *sniff*