Hi everyone!

I am looking for a specific fanfic in which Cas is the owner of Sam and Dean and as the two always fight, Cas decides to make Sam an Omega(or just cut his balls off, I am not certain which) which happens at Dr. Gabriel's office. Lots of smut with top Dean and Top Cas with bottom Sam. Sam and Dean are treated like dogs and i think at the end sam is pregnant.

Anyone have a title or copy of that fic for me? I'd appreciate the help.

Thank you in advance!

https://archiveofourown.org/works/7568281/chapters/17217571