The Teen Mom 2 star inadvertently addressed the news during the Tuesday, July 4, episode of her "Baby Mamas No Drama" podcast, which featured a guest appearance from Aurora Culpo.
Lowry was chatting with Culpo about her new reality show, The Culpo Sisters, with the MTV alum recalling watching it for the very first time when she was "in the hospital having one of [her] kids."
She further described the episode, which highlighted sister Olivia Culpo babysitting Aurora's children — son Remi, 4, and daughter Solei, 2.
After the podcast aired, listeners quickly pieced together the timeline of when the episode aired from the first and only season of the TLC series and the month Kailyn had reportedly given birth to her fifth kid, with both occurring in November 2022.
Kailyn is also the mom of her 2-year-old son, Creed, who was born at home in 2020, as well Isaac, 13, Lincoln, 9, and Lux, 5.
"At this point I don’t think she cares if we know she just doesn’t want to talk about it openly," one Instagram user commented on a social media teaser of the podcast shared by a Teen Mom fan account, while another admitted they don't "blame her for keeping her baby private."
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A third user mentioned: "I don’t get why this chick would not just say 'yeah I have another kid!' That’s just weird."
Back in February, the Us Sun spoke to a source confirming the rumors were true.
"Kailyn gave birth to a baby boy on November 20 with Elijah," the insider announced at the time, noting, "she has only told close family and friends."