Heather Rae El Moussa said she popped blood vessels in her face and chest while giving birth to her son. An OB-GYN says that's unusual.

• Heather Rae and Tarek El Moussa announced their son's name is Tristan on Instagram on Tuesday.
• Heather said she broke blood vessels in her face and chest while pushing during childbirth.

Heather Rae and Tarek El Moussa shared new details of their son's birth on Tuesday.

Heather and Tarek welcomed their first child together on January 31, as they shared on Instagram.

And on Tuesday, the "Selling Sunset" and "Flip or Flop" star revealed their son's name, and described details about his birth in a second Instagram post, which included two photos of Heather, Tarek, and their baby at the hospital.

"We'd like to introduce Tristan Jay El Moussa to the world," they wrote in the caption of the post, saying they picked the name because Tarek was almost named Tristan and Jay is Heather's father's middle name.

The El Moussas went on to write that they "had some scary moments" ahead of Tristan's birth. When Heather was four days past her due date, they said, their doctor sent them to the hospital because Tristan's movement in utero slowed down.

Once they arrived at the hospital, Heather's care team determined she had scar tissue that was impacting the process of her cervix softening and her water breaking, delaying labor, according to their Instagram post.

Her team then induced labor, but they said that when it was time to push, Tristan's heart rate dropped.

"Tristan's heart rate was dropping very low every time I'd push & was staying low. Which was terrifying," Heather said in the caption, adding that her doctor told her to push immediately or she would need to have an emergency c-section.

"Tarek was on my right holding my hand talking me through everything," Heather went on to say. "I pushed so hard all the blood vessels broke in my face and chest."

After Heather's big pushes, Tristan was born.

"Our baby boy came out healthy and beautiful, I was in a state of shock it was a surreal experience," Heather wrote in her post. "I was emotional and drained & so in love already."

Tarek and Heather, who were married in 2021, announced they were pregnant in July 2022, sharing they were surprised they got pregnant naturally; they had started the process of IVF when Tristan was conceived.

Tristan is Tarek's third child, as he shares Taylor, 12, and Brayden, 7, with his ex and "Flip or Flop" co-star Christina Hall. Hall has another son, Hudson, 3, with her ex Ant Anstead.

A representative for the El Moussas did not immediately respond to Insider's request for comment.

An OB-GYN told Insider bursting facial blood vessels during childbirth is unusual

Other new moms have documented broken blood vessels after vigorous pushing. Yelena von Breymann of Tennessee, documented her postpartum recovery, including the broken blood vessels in her face, eyes, and neck, on TikTok last year.

She said she was scared to look in the mirror at first, but recovered within a few weeks. "I've never seen anything like that," she said in the comments.

While other women responded that it's happened to them too, Dr. Nicole Rankins, an OB-GYN in Virginia, told Insider it's unusual to break the blood vessels in your face and chest during childbirth. In her 20 years of practice, she doesn't recall seeing that happen, she said.

"This does not happen with typical pushing. It's most often going to happen with very intense pushing," Rankins, host of the All About Pregnancy & Birth podcast, said. She added that relaxing the face and focusing on pushing in the vagina may help prevent the complication.

If blood vessels do burst, Rankins said they'll likely heal within a week or so without intervention. If not, a primary care doctor or dermatologist can help, and a opthalmologist can take a look at broken vessels in the eye.