Jim Bob and Michelle Duggar are no longer expecting their 20th child.

At a routine check-up Thursday to find out the sex of their 20th child, the couple found out Michelle, 45, had miscarried in her second trimester.

PHOTOS: Baby boom hits Hollywood

"We had just been talking about baby names last night and they were getting excited about naming a boy or a girl," the star of TLC's 19 Kids and Counting told People.com. "It has been a real sad disappointment." It was the second miscarriage for Michelle, who lost a baby during her second pregnancy.

She says the family will select a name after they know if the baby was a boy or girl, and they then plan to have a funeral service.