Kourtney Kardashian Reveals the Reason She Cries Herself to Sleep 'Every Night' in 'KUWTK' Clip

Kourtney Kardashian

The reality star opens up about expanding her family in an all-new clip from Sunday's episode.

Sounds like Kourtney Kardashian may not be done having kids after all!

In a sneak peek clip from an all-new episode of Keeping Up With the Kardashians, the 39-year-old mother of three discusses her pregnancy fears, telling friends Larsa Pippen and Stephanie Shepherd about the struggles she's been having while freezing her eggs.

"I've been so up and down emotional because I've been doing the shots for egg freezing," explains Kourtney, who shares Mason, 8, Penelope, 6, and Reign, 3, with ex-boyfriend Scott Disick. "And it's, like, crazy. I feel like I want to jump out of my skin! Like, I'm so crazy. I just -- I can't take it."

Kourtney says the injections themselves weren't really "a big deal" because she has a really high pain tolerance.

"I think everything was just really heightened and some days I would feel so anxious," she says. "It's just very emotional. So that, I think, is the hard part."

"I mean, I feel fine," she adds. "I just cry myself to sleep every night. Honestly, I don't know if I'm going to have more kids. I just feel like it's just for safety."

Kourtney first revealed she was thinking about freezing her eggs to her sister, Kim Kardashian West, on an episode of KUWTK that aired earlier this year.

"So, I've been thinking about freezing my eggs," Kourtney said, to which Kim responded, "Are you serious? You want another kid?"

"What if I do though?" Kourtney replied at the time. "I don't know what I want. What if I want a kid in the next 10 years? Wouldn't you rather have the insurance sitting there?"

Keeping Up With the Kardashians airs Sundays at 9 p.m. ET/PT on E!