Kim Zolciak’s 4-year-old son, Kash Biermann, was attacked by a dog on Saturday.

“I don’t know where to start,” the reality star shared in a lengthy Instagram note posted Sunday afternoon. “The last 14hrs of our lives has been a living nightmare.”

“My sweet @kashbiermann was bit by a dog and had very traumatic injuries,” the star explained. “I’ve never prayed so hard, or been so scared in my life. My husband, our daughters, Kj, Tracey, his nanny, Michael Beck and everyone close to us all pulled together and held each other up.”

Zolciak, 38, says Kash underwent a long surgery and the family is now praying for a speedy recovery. She also posted a snap of Kash resting in a hospital bed covered with an animal-print blanket while his father, Kroy Biermann, holds his hand and strokes his head.

Because of the circumstances, the former “Real Housewives of Atlanta” fixture will not attend Sunday night’s taping of “Watch What Happens Live” in New York City.

“Will do my best to make it up very soon! Thank you for all your prayers and most importantly thank you God for your protection,” she added. “A very special thank you to my incredible medical team! A few days in the hospital and we will be back home.”

It’s unclear what type of dog attacked Kash or where the incident took place.

A request for comment from Zolciak’s team wasn’t immediately returned.

This article originally appeared in the New York Post's Page Six.