Chrissy Teigen Tells 'Sweet, Strong' Unborn Son He's 'Working So Hard' as She Shares Ultrasound

Georgia Slater

Pregnant Chrissy Teigen Accidentally Reveals Whether She's Having a Boy or a Girl: 'Oops!'

Chrissy Teigen shares daughter Luna Simone, 4, and son Miles Theodore, 2, with husband John Legend

Chrissy Teigen is counting down the moments until she can meet her baby boy.

On Thursday, the cookbook author — who is currently expecting her third child with husband John Legend — shared her first 3D ultrasound of her unborn son, praising him for "working so hard" while growing in her stomach.

The snapshot shows the baby's facial features as well as part of his hand. "Hi my sweet strong boy," Teigen wrote on the picture. "You are working so hard, I promise it'll be worth it!!!"

Earlier this month, Teigen shared on Twitter that she was on "official 2 week bed rest," which ended on Tuesday.

The Chrissy's Court star teased last week that being on bedrest was a "punishment for saying the first two pregnancies were easy peasy."

"Been in bed for all but 5 mins of the last 24 hours. Here til next Tuesday," she wrote. "Lord it's kind of crappier than it sounds."

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Chrissy Teigen/Instagram

RELATED: Pregnant Chrissy Teigen Accidentally Reveals Whether She's Having a Boy or a Girl: 'Oops!'

Teigen, 34, and Legend, 41, are already parents to daughter Luna Simone, 4, and son Miles Theodore, 2.

Multiple sources confirmed Teigen's pregnancy to PEOPLE last month after the couple revealed she is expecting in Legend's "Wild" music video, and the Lip Sync Battle host shared a video of her baby bump to reveal the happy news.

Last week, while speaking on her Instagram Story about complications that led to her requiring to be on bed rest, the Cravings cookbook author accidentally revealed the sex of her baby on the way.

She started to refer to her unborn child as a "he," saying, "It's so weird because the baby's really really healthy. He's big. He’s probably, oops! That was stupid."

Realizing what she'd done, Teigen then covered her mouth before continuing with her health update."Hahahahaha might as well tell you," she captioned the post.

Chrissy Teigen/ Instagram Chrissy Teigen

RELATED: Chrissy Teigen Says Current Bed Rest Is ‘Punishment’ for Saying Previous Pregnancies ‘Were Easy’

In her video, Teigen also spoke about her prior pregnancy complications, telling fans, "My placenta sucks."

"It's always been kind of the bad part of my pregnancies with Luna," she said. "With Miles, it just stopped feeding him. It stopped taking care of him. I was stealing all his food because I was getting huge but he wasn't getting big at all, so he had to come out early and Luna had to come out early. I was induced both times."

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Chrissy Teigen Postpones New Cookbook Indefinitely amid Pregnancy: 'I Am Devastated'

Teigen is currently expecting her third child with husband John Legend.

Though she said her placenta is "super weak," Teigen assured her followers that her baby on the way is "growing beautifully."

"Everything's good," she said. "I'm feeling really good, but my placenta's really, really weak and it's causing me to really bleed a lot. So basically, it's just pretty high risk."

"This poor thing has been through so much already," she continued. "We just have to get my placenta healthy again, and that means not moving so I'm on complete and total 'don't get out except to pee-pee' bed rest."