According to People, once Kylie told Kim about her alleged pregnancy, she was a bit taken aback by the news.

"Her first reaction was, 'Seriously?'" the source told the

According to People, once Kylie told Kim about her alleged pregnancy, she was a bit taken aback by the news.

"Her first reaction was, 'Seriously?'" the source told the publication. "She didn't respond well at first. It's like she and Kanye [West] had gone on this whole journey to get pregnant for months, and now this happens to Kylie. She teared up. It definitely took a lot of time for her to process it."

Kim and Kanye reportedly were shocked at the ease that Kylie conceived a child while they were struggling to have their third.

"It came out of nowhere," the source continued. "It was the last thing on their radar. Kylie is just 20 and hasn't been with [boyfriend Travis Scott] for very long. So no one saw this coming."

While she had her reservations, at first, Kim is reportedly now fully in support mode for Kylie and her rapper bae.

"Of course, Kim is happy for Kylie," the insider said. "She's going to support Kylie 100 percent, no matter what. There's never been any question about that. But it's just a weird dynamic, after all that Kim did to intentionally have another child. It has taken a lot of time, energy and money for her to get pregnant, and now Kylie is having a baby around the same time."

Get more on Kylie's alleged pregnancy with BET Breaks, above.