I Know Where Babies Come From, Derek by DiscontentedWinter
http://archiveofourown.org/works/3377438/chapters/7387577
Great story one that made laugh and cry so hard my niece was staring at me like I was nuts. I love good Mpreg stories and this is one. If you don't want spoilers just take my word this is great and go read it. The author has a feel for the characters and the story moves smoothly. This is not an instant oh a baby, oh you're the love of my life, oh lets live happily everafter. Instead with the arrival of the baby they are shown what could be. The story starts with a storm only Stiles hears and he opens his door to find a baby wrapped in singed blanket in a box on his doorstep. It only gets stranger from there but Stiles thoughts are hysterical when he thinks he time traveled. Soon Stiles and Derek become attached to the baby girl that smells of both until the storms come back and Stiles realizes that they may be coming back for the baby. The scene on the stairs with Scott, who has known him forever and knows how he thinks, is moving because there is not a single person that has not wished for a problem to just go away. The scenes in the bedroom with his alternate, Derek, his father, Deaton and Scott's mom is heartbreaking. Stile gets a glimpse of who he could be and the consequences of that much power.
