Oh, baby!

That's the sentiment Jessie James Decker and husband Eric Decker seemed to have when they found out she was expecting their fourth child. In fact, the country singer noted how her pregnancy news was not only unexpected but quite shocking.

"It was not planned," Jessie said during an Instagram Q & A session with her followers on Aug. 27. "We were very, very surprised."

The 35-year-old—who is also a mom to Vivianne, 9, Eric Jr., 7 and Forrest, 5—explained that she and Eric, 36, were content with being a family of five.

"As you know, I had been telling Eric it was probably time to get a vasectomy because I felt like we were done," Jessie told her followers. "I just feel like God always has other plans. So, it was extremely shocking and surprising."

In fact, the "I Look So Good" singer revealed that Eric was in disbelief at first.

"He thought I was playing a joke on him because you guys know I'm such a jokester," she shared. "But I would never joke about something like this."

Despite their initial reaction, Jessie said that she and Eric couldn't be happier about growing their family.

"Being able to have another little baby is the most incredible blessing," she continued, holding back the tears. "We are all just over the moon."

The Kittenish founder, who revealed she's about four months pregnant, recently announced the baby news.

In an Aug. 22 Instagram video, Jessie played Mariah Carey's song "Always Be My Baby" in the background as she pranced around in a cute bra and underwear set, showing off her adorable baby bump.

"Good morning," she wrote at the time.

And while Jessie's pregnancy came as a surprise, she's spoken before about the possibility of adding a "caboose baby" to the family and advises fellow moms to follow their own track.

"Do what you want to for yourself and your family," she exclusively told E! News in January. "You don't owe anyone anything. You do what feels right, what feels comfortable, you are the mother and you're going to know what's best."

Before Jessie and Eric welcome their little one, keep scrolling to relive their cutest family moments.

The Decker's youngest, Forrest Decker, turned one in March of 2019 and of course they celebrated with balloons and kisses!

"Loves of my life #feelingrateful," Jessie James Decker captioned this sweet photo of her kids and her husband Eric Decker.

The Deckers visited Disneyland in February and despite trying to be romantic, the couple was photo-bombed by their son Eric Decker II. 

In January, the Decker boys cuddled up on the couch...dressed in their Woody pjs and watched some football.

On Christmas Eve, the Decker kids got into a little mischief, but we still think they're cute.

Come on, could these two be any cuter?

All three of the Decker kids including daughter Vivianne Decker, and sons Eric and Forrest were all smiles while out at the grocery store in November 2018.

We are loving all of these adorable costumes from Halloween 2018.

"My whole purpose in life #mifamilia," Jessie captioned this vacation snap from 2018.

What better way to celebrate 4th of July than hanging out on a boat with your sweet family?

Not everyone was happy to take this photo, but that didn't stop mom and dad from posting it.

In June, Eric became a human jungle gym thanks to his little kiddos.

Vivianne clearly loves her little brother Forrest in this precious pic from April 2018.

The former football player is always ready to hug it out with his little munchkins. 

Even though Jessie was sick in this photo, she had her two oldest kids to keep her spirits high.

In December 2017, the two oldest Decker kids had a big smile when they met Santa. 

Getting ready for Halloween is so much more fun when someone is wearing a Mickey Mouse head!

Aw, our hearts are so full looking at these two.

The country singer looked adorable as she waited to watch her husband's first game as a Tennessee Titan with her kids in August 2017.

The award for most patriotic family has to go to the Deckers.

Kisses and cuddles are what these two are best at and it's so freaking cute.

Vivianne got up on her dad's shoulders as the couple participated in a charity event in Tennessee in 2017.

"My wolf pack!" Jessie wrote alongside this photo of her family of four back in March 2017.

This party looks like a blast and we officially want to be invited to the next one.

Before the Deckers were a family of five they were hitting up weddings as a squad of four and looking good while doing it.

For Halloween in 2016, the fun family dressed up as characters from Peter Pan and they totally nailed it.

Ahead of Eric's 2016 season with the New York Jets, his family joined him at practice and we got this sweet photo as a souvenir. 

There's nothing quite like a family day at Disneyland.

Back in November 2015, the super mom and her two little ones enjoyed watching their main man dominate on the football field.

For Halloween in 2015, these two kids dressed as the princess and her frog and we don't have words!