Actress Claire Coffee to be a first-time mom

Actress Claire Coffee and her musician husband Chris Thile are preparing to become first-time parents.

The Grimm star and the Punch Brothers frontman are set to welcome a son in May (15), and Coffee admits to People magazine that she was so excited to find out if she was expecting that she came close to dismissing the test that indicated she was pregnant.

She explains, "I'm not a patient person and I didn't realize you had to wait 10 minutes for the double lines to show up on those little pregnancy tests. So I kept trying and just seeing the one line and I thinking, 'Oh well, maybe next time.'

"Later, I was taking out the garbage and I saw these little pink double lines in the trash. It was very exciting and my husband was actually in town so we were together."

Coffee and Thile tied the knot in 2013.