United Kingdom, Nov. 23 -- Derek Hough is experiencing a wave of emotions ahead of becoming a dad.

The Dancing with the Stars judge joked he has "absorbed" all of his 31-year-old wife Hayley Erbert's pregnancy feelings as the couple gears up to welcome their first child together.

Derek, 40, told E! News: "I'm freaking out, or I'm emotional, or I'm crying. She has been the Zen Buddha, just at peace. She's been incredible."

The star said it has been a joy to watch his "bada**" spouse prepare for motherhood.

Derek gushed: "Honestly, it's been really amazing to watch, to observe and to just witness her being an incredible mother before she has this child."

The couple - who tied the knot in front of 106 guest at their fairytale Monterey C...