'Fixer Upper' star Chip Gaines 'swears' by what gender he thinks baby No. 5 with wife Joanna Gaines is

Is a baby boy on the way for "Fixer Upper" stars Chip and Joanna Gaines?!

According to Joanna's most recent Instagram post, which was an ultrasound video that she shared on Wednesday, hubby Chip "swears" that she's carrying a boy.

SEE ALSO: ‘Fixer Upper’ stars Chip and Joanna Gaines announce pregnancy

"Chip swears he can already tell it's a boy," Joanna captioned the clip. "Look at the little heartbeat!! 🙌🏽❤️❤️ #5"

The post came less than a day after Chip announced on Tuesday night that he and his wife were expecting their fifth child together. In the hilarious snap, the couple sported matching green tops and baby bumps.

"Gaines party of 7," he captioned the picture. "(If you're still confused.. WE ARE PREGNANT)"

See more photos of the couple on Instagram:

30 PHOTOS
Chip Gaines and Joanna Gaines on Instagram
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Chip Gaines and Joanna Gaines on Instagram
This is 40. And I like it... #pregnantandforty #anddoughnuts
I can't believe tonight marks our very last episode of Fixer Upper. This picture is of us filming our pilot in 2012 and then our last scene of fixer in 2017. What a journey this has been! Check out my blog to read an update from us and to see what's on the horizon for our family and Magnolia as we move forward. The end is bittersweet, but we are excited for what's to come. Tune in tonight for the series finale on HGTV @ 9/8c! #fixerupper (link in profile)
We can’t believe tonight’s the series finale of #FixerUpper. What a ride it’s been! I'll be sharing some blasts from the past today leading up to the final episode at 9/8c on HGTV.
I can't believe there are only TWO fixer uppers left?! I love tonight's episode!! See Chip's dream of owning a breakfast joint turn into a reality with this giant renovation. Watch tonight at 9/8c @hgtv #magnoliatable #fixerupper
What an amaizng weekend with the @timtebowfoundation ✨ Thank you for giving hope and love to so many #ttfgolf2018
Tonight's episode is another favorite of mine because it's a personal project here at the farm. I can't wait for you to see this beautiful reveal! #fixerupper 9/8c @hgtv ❤️
Tonight’s going to be a very special episode! We partnered with @timtebow and the @timtebowfoundation to help an amazing family here in Waco. You won’t want to miss it!! @hgtv 9/8 CT. #fixerupper | Photo courtesy of @HGTV
The restaurant is getting so close. Magnolia Table will be open soon and we can’t believe it?!? Chip + Jo=❤️
Gaines party of 7.. (If you’re still confused.. WE ARE PREGNANT) @joannagaines
This guy right here... I get to live life with him. I get to hear his thoughts and benefit from his wisdom and encouragement on a daily basis. The reason I am who I am today is because Chip pushed me to go for it. People think of him as a jokester, and he is. It’s a huge part of why I fell in love with him in the first place. But he is so much more than that. He is the ultimate cheerleader, coach and dream maker. I am so thrilled that his book releases today mostly because I believe it holds truth that the world is in desperate need of. I am always proud to be Chip’s wife but today more than ever. I know this book was a true labor of love. Well done, Chip Carter Gaines! #CapitalGaines @chipgaines
What a day!! #CapitalGaines #booktournyc @chipgaines
What a night ✨✨ #silobration
Today we got to take a walk down memory lane with the crew... remember this house?! This was the first home we shot for our #fixerupper pilot episode five years ago! My how time flies 📺
Thank you all for watching, caring and cheering us on these past few years. We are overwhelmed by your support and your kindness. You have become a part of our story forever. Season 5 of Fixer Upper is scheduled to start airing in November and we really have saved the best for last! (To see the full announcement about our finale season, visit magnoliamarket.com/blog)
Congratulations to my Chipstarter winners! Some may say 6 out of 2,700 is lucky.. around here we call that a miracle and I’m honored to be a small part of your story moving forward. Thank you to everyone who took the time to share your dream with me. Capital Gaines is officially out tomorrow, so go pick up a copy and keep working towards that dream of yours. #CapitalGaines (link to winning videos in my profile)
Jo has poured her heart and soul into this new line, Hearth & Hand with Magnolia available at Target November 5th. We're here with Bullseye at Target HQ today announcing it to all of their team members! I wrote down all my thoughts about this project on the blog—go check it out. #HearthAndHand (Link in profile)
@U2 tonight - I have a feeling this is going to be a good one. #U2TheJoshuaTree2017
Another #fixerupper reveal down today for Season five! @hgtv #season5iscoming
Was trying to make a video for a friend this morning with @chippergaines .... his tutorial was 👍🏽 #🤡
Once a design assistant, always a design assistant. I've got the best job in the world! #fixerupper #season5iscoming
I've got you babe! #season5iscoming #fixerupper 📹: @huntybuns
WHAT!?! 📸@brockwayne
Out on a hot date last night! @joannagaines loves to drive, so I usually let her.. but road trips, those are mine!
"We were together. I forget the rest." - Walt Whitman & @jimmydon522 Happy Valentine's Day @joannagaines
He competes with the view. Man bun, tube socks, adult onesie and all... He still looks mighty fine to me❤️#workcation #bookcamp
That was a fun date night ❤️@chippergaines @u2
Today started off with me holding one of our new baby goats and counting chickens... I knew it was going to be a good one. THANK YOU for all the kind words and birthday wishes ❤❤❤
Watch an all new #fixerupper tonight!! 9/8c @hgtv
Happpppy New Year!!! 2017!! #adultonesies @chippergaines
Tonight is an all new special episode! It's the season four Clip show- full of out takes, bloopers and behind the scenes footage. You won't want to miss! 9/8c @hgtv
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He added on Twitter that the couple conceived baby No. 5 after "a little too romantic of a concert" by Johnnyswim in Waco, Texas "a few months back." 

"One thing led to another, & we are officially pregnant," he added. "And I could not be more EXCITED! #5 #7ThePerfectNumber"

Chip and Joanna Gaines, who announced in September that their beloved HGTV hit "Fixer Upper" was coming to an after its current fifth season, already share Drake, 12, Ella, 11, Duke, 9, and Emmie Kay, 7.

RELATED: Peak inside the Gaines household:

16 PHOTOS
Inside Chip and Joanna Gaines' home
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Inside Chip and Joanna Gaines' home
Played in the dirt this weekend and spruced up the front porch with a variety of hydrangea plants. Now time for a Sunday nap 💚 #homebody #andplantladytoo
It's time for bed but I was determined to find a perfect spot for this metal verse. #fourthtimesthecharm
One day I will show you what's inside this extra large hutch... #dishjunky #farmhouse
May your day be Merry and Bright! #merrychristmas
Rearranging living room today made the space feel so much bigger. #monstertreeisgone #rearranginganditfeelssogood #farmhouse
This rainy day is making it really hard for me to leave for work. #homebody
I may have gained ten pounds today... #christmasbaking
Formal sitting room turned office. Chk out the details on my site. #makeyourspacesworkforyou
Day 10: allergies aren't fun and they got the best of me tonight. So I did some sit ups and called it a day. Showing up is the hardest part #healthybody #healthymind #youcandoit
Excited to announce that soon and very soon you will be able to get the farmhouse style online and at our storefront boutique! #openingmay2014
A farmhouse for the dolls, fairies, and other lucky miniatures. #farmhouse
The hardest thing about bunk beds is when you have to actually make the bed. I just got simple striped sheets #potterybarn and a nice throw blanket #target for the edge of the bed. This cuts the time in half and it still has a finished casual look
Boys bathroom after a good cleaning. #howdoesitgetsodirty #farmhousestyle magniolia farms vanity built by @ckharp
Upstairs reading nook #ifonlyiwasareader #farmhouse
Are you crafting this summer? #imnotbutwishiwas #createandinspire
The jasmine vines are finally doing their thing and framing out the front of the greenhouse
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