The former 19 Kids and Counting star and her husband welcomed a boy Thursday evening, a rep confirms to PEOPLE.
Jessa, 23, and Ben, 20, shared the news of their pregnancy exclusively with PEOPLE in April.
"I think having this first year together to share our lives, just the two of us, has been special," said Jessa before adding that the two are "definitely excited to be parents."
Courtesy Jessa Duggar Seewald
The birth of the new baby will be a focal point in Counting On, TLC's upcoming series of specials featuring Jessa and sister Jill's lives now.