In a scene from the Amazon Prime documentary Kelce — which follows the Philadelphia Eagles center, 35, through the 2022-2023 season as he grapples with retirement — the pregnant mom goes to an ultrasound appointment.

“When we firmed up a due date and then they had gone on a winning streak, I went to an OB appointment and was like, ‘Hypothetically speaking, if I had to go somewhere and I was 38 weeks pregnant, would you go with me?’”

Because while we’re out there, he would be of no use to me. And if anything’s going to put me into labor early, it’s watching a Super Bowl,” she says in a voice-over as she’s examined on screen.

“So if everything goes to plan, it would be terribly inconvenient for them to make the Super Bowl, and so very likely that it’s a possibility.”

The couple ended up welcoming daughter Bennett Llewellyn in March, joining big sisters Elliotte, 2, and Wyatt, 3.

Speaking with PEOPLE ahead of the big game, Kylie said she was feeling “very pregnant.”

“With number three, it’s all familiar feelings. It’s like right when you think there’s no room left, somehow your body makes room,” she shared. “So we’re still stretching, even though I swear there’s no room.”