Pregnant HGTV star Joanna Gaines has been flaunting her baby bump for months now. That said, Fixer Upper fans are dying to know: when is she due with baby No. 5? Thanks to her husband, Chip Gaines, we have an idea!

He took to Twitter in January to reveal the night that led to his and his wife's conception of their fifth baby. Fortunately for fans, this bit of borderline TMI info gives insight into her due date. And since we all can't wait to welcome baby Gaines to the family — this is great news.

"Hint #3 You might recall a few months back.. the ever amazing, ever romantic @JOHNNYSWIM was in Waco," he tweeted to his over 600,000 followers. "And they put on a little too romantic of a concert.. anyways, one thing led to another, & we are officially pregnant. And I could not be more EXCITED! #5 #7ThePerfectNumber."

It doesn't take a detective to figure out what Chip meant with this tweet. The couple clearly enjoyed the romantic concert since "one thing led to another." The Johnnyswim concert Chip referred to was on Oct. 13, in their hometown of Waco, TX. So if Chip and Joanna did, in fact, conceive the baby she's carrying that night she's about 20 weeks into her pregnancy. That puts her due date sometime in July 2018.

The couple is already parents to children, Drake, 12, Ella, 11, Duke, 9, and Emmie, 7. And before they announced their pregnancy, they teased that having another child was something that they were considering.

"We had four babies right before the show started, and then we’ve had zero babies since the show started," the 43-year-old dad said. "For me, I’m really excited to go back and try to maybe… try to make some more babies." It seems like it took Joanna a little more convincing. "Maybe. We have different answers," she added.

But, she later said, "Emmie has never really wanted one, and now she’s like, 'Okay. I want a brother or sister. So I’m thinking that might be a sign." We think it was too!