"She was experiencing slight stomach pains all day that increased and the doctors thought it was best to have them checked out," Hough's publicist Cindy Guagenti told The Associated Press. "But she didn't collapse."
Hough had seemed to be fine while on the show's live broadcast and even repeated her lively jitterbug performance with celebrity partner Hannah Montana actor Cody Linley -- which had received the second week's second-highest judges' score on Monday night's performance show -- after it was requested by judge Len Goodman.
However, Hough's day had been busy prior to the live broadcast. Before the results show, Hough -- who also recently released her debut country album -- had twice sung her "My Hallelujah Song" single as part of a choreographed performance that will air on the show later this season, Peoplereported on Wednesday.
After the show, Corky Ballas -- the professional partner of celebrity competitor Cloris Leachman -- toldExtra that he thought Hough had a "little tummy ache," but chalked up the incident to her simply having a "pretty tough day."
"She sang twice... She had to do that, and then she had the honor dance with Cody -- and then we had yesterday. So it's quite a stressful day after a big Monday night to do a Tuesday night. And I just think the body breaks down. Just a little tummy ache and no big deal," he added.