Meanwhile, the new baby might share a birthday with another member of the gang, because Amy is also celebrating her birthday. And it looks like she's doing it in the nerdiest way possible.
Check out the photos below for sneak peek of "The Birthday Synchronicity," airing Thursday, December 15th at 8/7c on CBS.
And in the meantime, you can always catch up on previous episodes when you watch The Big Bang Theory online right here via TV Fanatic!
1.
Sheldon Has a Special Birthday Gift for Amy - The Big Bang Theory Season 10 Episode 11
This gift is so special, that he has to wake Amy up the minute the clock strikes twelve to give it to her. She seems to be okay with that, though.
2.
It's a Picture of His Brain! - The Big Bang Theory Season 10 Episode 11
Yeah, she's definitely excited over this very weird gift -- a photo of her boyfriend's brain! Happy Birthday, Amy!
3.
Harry Potter Madness! - The Big Bang Theory Season 10 Episode 11
Looks like Sheldon is all decked out in a Harry Potter costume, but he should probably be careful where he points that wand!
4.
A Romantic, Nerdy Evening? - The Big Bang Theory Season 10 Episode 11
Will Sheldon and Amy be getting intimate once again as a way to celebrate Amy's birthday? It looks that way, and this time, it's apparently going to involve a little magic!
5.
Amy, or Hermione? - The Big Bang Theory Season 10 Episode 11
It's Amy's birthday, and she's getting herself prepared by dressing up in a Harry Potter costume!
6.
Be Careful With the Wand! - The Big Bang Theory Season 10 Episode 11
Sheldon should really be concerned about the fact that Amy is holding a wand. She doesn't look very pleased, either.
7.
Here Comes the Baby! - The Big Bang Theory
Bernadette is in labor, and her friends gather around in support.
8.
The Happy Couple - The Big Bang Theory Season 10 Episode 11
Seriously, aren't Howard and Bernadette the cutest? They look pretty happy as the await the arrival of their new baby.
9.
Labor Pains - The Big Bang Theory Season 10 Episode 11
Bernadette is in labor, and Howard is right by her said. Who else thinks he's going to say something stupid at some point?
10.
The Waiting Room - The Big Bang Theory Season 10 Episode 11
The gang waits in the waiting room while Bernadette is giving birth. What a supportive group of friends she has. Plus, those conversations have got to be interesting...
11.
Sheldon and Amy in the Waiting Room - The Big Bang Theory Season 10 Episode 11
Sheldon and Amy join the rest of the group in the waiting room while Bernadette is in labor. The pressure might be on for them to have a baby next...
12.
Penny and Leonard Look Confused - The Big Bang Theory Season 10 Episode 11
Or maybe just concerned? Also, if Amy and Sheldon don't get the pressure to have a baby next, I wonder if Penny and Leonard will start getting that question instead?
13.
The Newest Member of the Gang - The Big Bang Theory Season 10 Episode 11
Everyone gets the chance to see Howard and Bernadette's new baby in the nursery -- the newest member of their gang! We're so excited!
Sheldon: This is for you. I was going to wrap it but touching Scotch tape gives me the heebie jeebies. Amy: I'll put it on the list with peaches and felt.