Gwen Stefani and Blake Shelton
Gwen Stefani and Blake Shelton packed on PDA for Thanksgiving. Pictured: Shelton and Stefani attend People's Choice Awards 2017 at Microsoft Theater on Jan. 18, 2017 in Los Angeles. Getty Images/Christopher Polk

Gwen Stefani and Blake Shelton have the best Thanksgiving experience on Thursday.

Stefani and Shelton spent the holiday together. The couple was more grateful because their family and friends were with them for the occasion. The No Doubt vocalist took to Instagram and shared a photo of them cuddling on Instagram. In the snap, "The Voice" judge is giving the "Hollaback Girl" singer a kiss on the cheek. "Had the best thanksgiving," Stefani wrote in the caption.

However, many noticed that Stefani's midsection is slightly bigger than usual. In the photo, she is facing Shelton and her alleged baby bump is visible on the side. This prompted fans to speculate that the couple is expecting their first baby together.

"Gwen looks pregnant in that sweater," one follower commented in the photo.

"@blakeshelton @gwenstefani look pregnant in that sweater how long before rumors start flying?!" mrsjja94 wrote.

"Could be a bump under that big ole sweater lol," mrs.renner added.

Meanwhile, some users seem sure that Stefani is really pregnant.

"She's pregnant for sure!" another user named suzierenky wrote.

"She's got to be pregnant!" shayshay2795 agreed.

Meanwhile, Stefani also shared another shot of her beau fishing. "Grateful," she wrote in the caption.

Shelton and Stefani left for Oklahoma with her kids Kingston, 11, Zuma, 9, and Apollo, 3. According to an insider, the "God Gave Me You" singer was looking forward to celebrating the holiday with his girlfriend.

"Blake and Gwen and the kids left last yesterday for Oklahoma. He is hosting a huge Thanksgiving with a bunch of family and friends back there," one source told Us Weekly. "Blake likes a very traditional Thanksgiving and all traditional foods, like stuffing and cranberry sauce. He does a bunch of the cooking and starts preparing it the day before because he does so much work."

Earlier that day, the "Rich Girl" songstress shared a photo of her with her family. "Family #sograteful gx #happythanksgiving." According to Stefani, they have this practice during Thanksgiving where they get creative to be grateful.

"In my family, we go big with tradition," Stefani told Entertainment Tonight. "We have one where we go around and everybody takes a letter of Thanksgiving, like T, H, and you make up whatever you're grateful for [starting with that letter] and you pass a candle around. So, everybody gets really creative and it's really sweet to hear the kids, like, try to figure it out."

What can you say about Shelton and Stefani spending Thanksgiving with their families together? Do you believe that Stefani is pregnant? Drop a comment below.