Supernatural Mpreg Fanfic. More in description

This book includes none other than two ghost hunters, and two Angels. Dean and Sam. Castiel and Gabe (Gabriel). The ships that are included are Dean x Castiel and Same x Gabe. Why not? Its cannon. Our mpregs are Castiel and Sam. Once again, why not? I chose those two cause I feel as if they would be more feminine. Please, no hate comments. Please, dont read this if you dont like my ships, or opinions. This will be mature out of its league! Please, be warned that it is 12+ or 13+!!!!