Big Bang Theory cast
The cast of "The Big Bang Theory" poses backstage with their award for Favorite Network TV Comedy Series during the People's Choice Awards 2016 in Los Angeles, California January 6, 2016. Reuters/Danny Moloshok

“The Big Bang Theory” delivers another hilarious episode this week on CBS, as the gang grapples with Bernadette’s (Melissa Rauch) latest bombshell. While everybody’s happy that there’s a bun in the oven, reality bites and they become aware of the implications of having a baby.

Other “The Big Bang Theory” cast members who will appear on Season 9 Episode 15, titled “The Positive Negative Reaction” include Howard (Simon Helberg), Sheldon (Jim Parsons), Amy (Mayim Bialik), Leonard (Johnny Galecki), Penny (Kaley Cuoco) and Raj (Kunal Nayyar).

Spoiler Alert! This article contains "The Big Bang Theory" Season 9 spoilers. Read only if you want to know more about it.

TV Guide reports that the gang finds out that Bernadette and Howard are expecting a baby. They toast the good news with a karaoke singing showdown. Meanwhile, Howard gets worried upon learning that Bernadette is pregnant, realising that he needs to work doubly hard in order to provide for their baby.

The official YouTube channel of “The Big Bang Theory” posted sneak peeks of the upcoming episode. On one of the teasers, Howard walks in the kitchen and sees Bernadette having breakfast. He finds a series of Post-It Notes on the coffee machine, milk carton and spoons that read “We are pregnant.” Howard can’t believe it at first, so Bernadette shows him the pregnancy test that indicates positive. The two are ecstatic over the news and share a kiss.

Source: YouTube/The Big Bang Theory

Howard figures on the next sneak peek, as he tells the guys that he’s going to be a father. While Raj and Leonard congratulate him, Sheldon gets upset with the pregnancy news. Sheldon whines, “This changes everything. What about comic book night? What about playing games together? What about our trips to Disneyland? How can we do those things with a child around?” Leonard jokes and asks him to relax because there’s enough room for two babies in their group. Sheldon doesn’t get the pun and thinks Penny is pregnant, too. “You’re the other baby,” Leonard says.

Source: YouTube/The Big Bang Theory

In another preview video, Bernadette breaks the news to the girls who can’t be happier for her. While the guys are excited over it, Howard starts to panic. “I can’t raise a kid, I don’t even eat my own vegetables,” he cries. Leonard tells him that they should go out and celebrate.

Source: YouTube/The Big Bang Theory

On the last teaser, Amy suggests to do something to take her mind off baby issues. Their mood gets dampened by all the things that Bernadette can’t do according to the doctor – drink, eat sushi and take a dip on the hot tub. Amy says Bernadette should change doctors, and Bernadette gives her a dirty look. Amy asks, “What, your doctor says you can’t laugh either?”

Source: YouTube/The Big Bang Theory

“The Big Bang Theory” Season 9 airs on Thursdays on CBS in the U.S.

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