Futatsume no Machigai

Elena planned to remain single, but she always wanted a child. That's why she accepted when her friend Sam offered to father a child with her. Nothing happened after a few weeks, so she assumed she hadn't conceived and thought nothing more of it. A whirlwind romance with Sam's brother, Jed, followed and the two were soon married! Elena was finally happier than she ever thought possible, but then she began feeling nauseous and realized she was six weeks' pregnant! (Source: Renta!)