Robin's Heartache: Why How I Met Your Mother Did It

Spoiler alert: This story reveals major details from this week's episode of How I Met Your Mother . Within the span of two episodes of the CBS comedy, Robin ( Cobie Smulders ) learned she was pregnant, only to be hit with the double whammy last night's episode she was in fact not pregnant — and could not have children.

Robin Tells Her Kids How She Met Their Father on 'HIMYM' (VIDEO)

It was a gotcha episode of 'How I Met Your Mother' (Mon., 8PM ET on CBS), picking up on events right where we left them with Robin and Barney in the bathroom of Marshall and Lily's suburban house. And once Barney stopped getting punched in the face for saying the wrong thing, he revealed he was excited to be a father. Robin then borrowed the conceit of the show, by talking to her future children, telling them their story. Only their story turned into little more than a fantasy, as it was slowly revealed throughout the episode that Robin not only was not pregnant right now, but she could never have children. For a girl who never wanted kids, this should have been great news.

How I Met Your Mother Boss: There Are More Twists and Turns for Robin

Be warned, How I Met Your Mother fans: You may want to have some Kleenex nearby for Monday's episode. "I think it's fair to say that the episode is different than anyone had imagined coming into it," co-creator/co-executive producer Craig Thomas tells "It's one of those where while we're shooting it and editing it that you see people tearing up. It's very funny, but it's very emotional too. The very end of the episode seems like it's made a lot of people cry, but it's a good cry." The episode picks up moments after Robin ( Cobie Smulders ) told Barney ( Neil Patrick Harris ) that she's pregnant and it is chock-full of more surprises, Thomas says —including, as the logline teases, some "bad news" for Robin. What could that be? Read on to see Thomas' hints about this revelation, why he and Carter Bays wrote the pregnancy, and what's next for the rest of the season.

'How I Met Your Mother' preview: Barney reacts to Robin's news

When Robin dropped the bombshell at the end of "How I Met Your Mother's" latest Thanksgiving episode [SPOILER ALERT] that she was pregnant, we didn't get a chance to hear Barney's reaction.Now, thanks to this preview clip, we'll pick up right where we left off and see exactly how Barney takes the news. Unsurprisingly, Barney is his usual inappropriate self, and reacts to the very serious revelation with uncouth jokes about Robin's boobs. (Never change, Barney.)After Barney ends up unconscious twice, Robin finds herself losing her grip. Hey, you would be too if there was a possibility that Barney Stinson could be the father of your child. Yikes.Check out the clip below:...

How I Met Your Mother “Symphony of Illumination” Season 7 Episode 12

How I Met Your Mother  “Symphony of Illumination” Season 7  Episode 12 airs Monday December 5 (8:00-8:30 PM, ET/PT) on the CBS Television Network . Episode Synopsis:  When Robin receives bad news, she decides to lie about it to the gang. Meanwhile,Marshall  hangs Christmas decorations  on the  house  in the ‘burbs with help from his neighbor, on HOW I MET YOUR MOTHER, Monday, Dec. 5 (8:00-8:30 PM, ET/PT) on the CBS Television Network. Read More...