I love both versions of your story! The angsty one is just a lovely 'real' moment between them that I would actually really like to see, and I liked the parallels between Dean and Castiel and their fathers.

The second one is awesome too xD I love it. Castiel seems so happy to have gotten Dean pregnant lol! Poor Dean *pats him* That's what you get for being 'persuasive' with Cas ;) he he.