Blac Chyna breaks down before her C-section in a preview for Sunday's special baby birth episode of "Rob & Chyna."

The 28-year-old model admits she's "so scared" to welcome daughter Dream with fiance Rob Kardashian in a clip for the "Rob & Chyna Baby Special."

"For some reason, I'm so scared," she reflects in a confessional. "I just cannot get this C-section, like, off of my mind. I just want my baby to be healthy. To have all of her toes, to be able to breathe on her own."

Blac Chyna gave birth to Dream via a successful C-section Nov. 10 in Los Angeles. She, Kardashian and his family celebrated the infant turning one-month old over the past weekend.

"This little love bug is 1 month old!!! @dream #blessed #love #family," Kardashian's mom, Kris Jenner, wrote on Instagram.

Blac Chyna and Kardashian got engaged in April after three months of dating and announced they were expecting the next month. "Rob & Chyna," which documents their romance, was renewed for a second season on E! this week.

"Rob and Chyna's romance struck such a chord with our viewers, who were engaged in their story even before we started filming the first season," E! programming and development executive vice president Jeff Olde said in a statement.

"We are excited to share the next chapter of their story."

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"Rob & Chyna" will return for an eight-episode second season in 2017. Kardashian announced in a tweet this week that the baby special will air Sunday, Dec. 18 at 8 p.m. ET.