The 22-year-old shared a photo of her growing baby bump, gently placing her hand protectively over her stomach.
She wrote on the picture sharing site: “16 weeks 1 day #BabyBump #BabySeewald”
Jessa is currently celebrating husband Ben’s 20th birthday, which we’re sure is going to be extra special thanks to their soon-to-be new addition.
It has been reported that Jessa is due to give birth on November 1, a year to the day from when they tied the knot in a romantic ceremony.
The couple both come from devout Christian families, and allowed cameras to film their traditional courtship.
Both Jessa and Ben were forced to enjoy dates with chaperones before they eventually tied the knot.
The youngsters remained virgins until they were married, choosing to follow their faith’s strict rules.
Viewers of the show will know that the couple had to jump through several hoops before they were allowed to marry, including several meetings between their families.
Are you a fan of the show? Let us know what you think of Jessa’s baby news in the comments section below.