Derek Hough is always in sync with Hayley Erbert .

So much so, the Dancing With the Stars judge joked he's "absorbed all of the pregnancy emotions" from his wife of two years as they prepare to welcome their first baby together.

"I'm freaking out or I'm emotional or I'm crying," Derek shared in an exclusive interview with E! News. "She has been the Zen Buddha, just at peace. She's been incredible."

Calling Hayley, 31, a "badass," the 40-year-old continued, "Honestly, it's been really amazing to watch, to observe and to just witness her being an incredible mother before she has this child."

But it's been quite the journey for Derek as well.

"I've been having classes with the doulas and midwives, learning all about the pregnancy," he explained. "Just all these different thin

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