TV Guide for Now Saturday 11 in TLC

God only knows what song is constantly playing in Sheldon's head, but it reminds him of Amy and leads to a surprising revelation.

Professor Proton visits Sheldon in a dream and gives him Obi-Wan-like advice about whether to go see the new Star Wars film or spend time with Amy.

Penny entices Leonard to meet with a psychiatrist, Stuart moves out of the Wolowitz house, and Howard and Bernadette find themselves at a loss.

Dealing with an under-the-weather Sheldon is draining for Penny, Leonard and the gang so they decide to treat themselves to a Sheldon-less weekend.

Sheldon's Meemaw visits and there's friction between her and Amy, which intensifies after the elderly woman blurts out a secret about Sheldon.

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.

Howard reconsiders entering into a legal partnership with Leonard and Sheldon, and the women offer Raj dating advice.

Ed Gamble, Richard Ayoade and Joanne McNally defend outrageous opinions. They tackle relationships, the royals and vasectomies.

Jason isolates due to a giant neck growth. Marisa dreads spider veins after surgery and Kobe hums to stay calm as a huge bump near his eye is removed.

Firefighter and passionate cyclist Dave is concerned about a pilar cyst on his head that prevents him from wearing helmets.

Melissa covered her huge lipoma with a sweatshirt for years. Tyler's fear of cancer stopped his head lumps being diagnosed and Tahj is covered in painful boils.

While Mary's away, George finds himself giving advice on Missy's love life. And Georgie has a solution for Meemaw's business woes.

While Missy asks some uncomfortable questions about sex in church, Meemaw and Georgie go into business together.

At 42 years old, Angel is staring death in the face. She is struggling to make a positive change and be an active part of her partner and son's lives.