TV Guide for Now Tuesday 25 in TLC

Sheldon and Amy celebrate Valentine's Day, Leonard and Penny feel the pangs of aging, and Howard and Bernadette find a surprise in their hot tub.

The gang learns Bernadette is pregnant and celebrates with karaoke. Meanwhile, Howard freaks out, convinced he must make more money for the baby.

Sheldon and the gang celebrate his birthday and he's surprised by a special guest.

It Looks Ugly, Therefore I Am Ugly. Klaire has a worrying lump on her groin which, despite being removed before, has grown back. Ciaran's lumps and bumps have ruined his confidence.

You Feel Like You're A Freak Show. Levi's had enough of the painful lumps on his body. Kim's facial hair is out of control. Roger's itchy rash is preventing him from enjoying life.

Dr. Lee meets Dee, a singer with a huge neck hump. Eli is embarrassed of his cheek bump but is worried that the removal could paralyse his face.

With school about to start in a few days, Frankie realises that she and Mike have barely spent any time together with the kids over the summer.

With school about to start in a few days, Frankie realises that she and Mike have barely spent any time together with the kids over the summer.

With Sue now in high school, Axl, who is totally embarrassed by her presence, decides to play a mischievous trick on her.

Dr. Lee meets Stephanie, who has a giant baseball-sized scalp bump. Plus, Wesley believes that a pencil lead is embedded in his palm.

When musician Travis got too big to walk down the aisle, he promised his wife a proper wedding one day. Since then he's only gained weight. Can Dr. Now help him.