Nikki Ziering got physical on Hulk Hogan's Celebrity Championship Wrestling, and her appearance on the new reality show has ignited a huge controversy.  Did she know she was pregnant while she was filming the show?
    
"I didn't find out I was pregnant until after I wrapped the show," says Ziering.
   
The 37-year-old Nikki has made a career out of her bikini body after getting her start on The Price is Right, but today Nikki is five months pregnant with her first child, a girl.

But many internet bloggers are claming she put her baby in jeopardy by getting in the ring.
   
"It's so ridiculous.  People are pretty ignorant to think that any woman who knows she's pregnant she'd do anything to jeopardize her child's health," Nikki says of her critics.

Hulk Hogan, who produces and hosts the program on cable channel CMT told INSIDE EDITION that Nikki's pregnancy was a surprise to him.  He says, "She got kicked a lot, but nobody knew she was pregnant."
           
Nikki showed INSIDE EDITION her most recent ultrasound.  Doctors say her baby is completely healthy and she's already shopping for the nursery.

Nikki, who was once married to Beverly Hills, 90210 star Ian Ziering, is now engaged to business executive Rick Reynolds.  She stresses nothing she did in the ring put her, or her baby, in danger.

"Nothing I did was enough to hurt the little baby," Nikki assures INSIDE EDITION.