Just found this online about the writers intending to have Snow pregnant even if Ginnifer wasn't expecting.
Ginnifer Goodwin is pregnant and that is in the storyline for her character?
"We’ll deal with the realities of her pregnancy, but how we do it, we’re not ready to share. When you saw Snow share her secret about that, it was well before we knew Ginny was pregnant. We’re telling the story that we’ve been setting up since the beginning of the season."
He also added that having a child tends to attract chaos, so it definitely sounds like there will be a lot of drama surrounding that.
Not sure if I wasn't the only Oncer who didn't know this so I wanted to share it with u guys :D