Hey, I'm looking for SPN RPF or SPN fic in which a character starts out as an alpha, beta or normal RL person and is somehow turned into an omega. Usually characters are born or naturally develop into alphas/betas/omegas in Omegaverse fic, but I just read two fics in another fandom in which becoming an omega is something that can be triggered. In one, it was bodyhorror, in the other the character was totally okay with it and both really worked for me. Can anyone rec anything like this in this fandom? I don't care who the lucky recipient is, though obviously Jensen, Jared, Sam, Dean or Castiel would be just fine.

Also, on a related note, usually Turned Into A (insert sex here) magical genderswap is very much "I woke up and found I had new bits". I would be really interested in any in which it takes longer to occur and the character experiences the transformation happening to him or her, with happy or unhappy results.