Michelle Duggar and husband Jim Bob are expecting their 20 th child.

Beth Hall/TLC

The stars of TLC’s “19 Kids and Counting” (expect a title change next season) made the announcement this morning on NBC, surrounded by her husband and their 19 children.

Duggar, 45, now three and a half months pregnant, said she was actually surprised to discover that she was expecting again. “I was not thinking that God would give us another one, and we are just so grateful,” said the mom who shuns birth control and leaves her family planning up to God.

After more than 20 years, Duggar had thought her baby days were behind her, especially after her last life-threatening pregnancy in 2009. Duggar suffered from preeclampsia and gall bladder problems. To save her life, doctors delivered daughter Josie three and a half months premature.

Josie weighed just one pound, six ounces at birth and went through a number of health crises, including a perforated bowel. Today, she is a healthy toddler who will turn two in December.

“When we look at Josie … even knowing that we went through the challenge that we did, we would do it again,” Duggar told Meredith Vieira last year from the family home in Springdale, Ark.

“Michelle and I both feel like some of the most blessed parents in the world. Our children are so sweet,” Jim Bob told NBC this morning. “We are so grateful to God.”

Besides, he added, “We didn’t want to stop on an odd number.”