Board Thread:Character Discussion/@comment-25355646-20150103235209/@comment-1894786-20151003120127

Well, if she was before, she won't be now. Emilie de Ravin is pregnant! ^_^ And seeing how they incorporated Josh's scar and Ginny's pregnancy into the show, they'll probably make Belle end up pregnant with Gold's comatose baby.

And it would fit, he left Storybrooke about 6 weeks ago. Women can usually first find out they're pregnant at one month along (about 4-5 weeks) but find out closer to 2 months if they're not planning for a child. So Belle could easily realize she's pregnant in Camelot and start showing in 5B.