"How exciting is that, love muffin?" Zolciak said on the show, hugging her husband Kroy Biermann. "You did it again, lovey... Are you excited, love muffin? It must be the athlete sperm."
Zolciak and Biermann already have two children together, Kroy Jr., 2, and Kash Kade, 9 months. Zolciak also has two daughters, Brielle, 16, and Ariana, 12, from a previous relationship.
"This is it," Zolciak said of her plans to stop at five kids. "You better hope you get a little girl, because this is it."