Ann Romney has become one of her husband’s most vocal and visible campaign surrogates, hitting the trail as recently as this past Monday to address the Connecticut Republican Party on the GOP frontrunner’s behalf.

But in an interview with “Entertainment Tonight”, the wife of Mitt Romney reveals that she had a health “scare” ahead of last month’s Super Tuesday contests.

Ann Romney has suffered since the late 1990s from multiple sclerosis, an autoimmune disease that can lead to physical and neurological disability.

“Well, there’ve been some days, like before Super Tuesday, I was quite fatigued,” she said. “And I knew I couldn’t quit. I didn’t tell anybody I was tired. ... I just kept going. I kept going.”

She described the pre-Super Tuesday episode as “a little bit of a scare.”

“What happens with me is that I start to almost lose my words,” she said. “I almost can’t think. I can’t get words out. I start to stumble a little bit. And so, those things were happening and I thought, ‘Uh, oh. Big trouble.’”