Soon-to-be mum Jill Dillard shared a photo on Saturday that displayed her large baby bump at 39 weeks and four days pregnant. 

The "19 Kids and Counting" star has shared photos and updates with her hundreds of thousands of fans throughout her pregnancy, via her and her husband's social media accounts. 

"Happy 9 monthiversary!!!" Jill's husband, Derick, captioned the picture. "A LOT has happened since June 21! I am blessed beyond measure and every day is even better with you baby! You're my best friend, and I love you with all my heart!"

Jill's baby bump photo was posted alongside a picture of Derick wearing a shirt that read "#newdad," and another photo of him holding a mug that said "Dad-to-be."

The newlyweds recently returned from Texas, and made fans nervous with their travel plans so close to Jill's due date of March 24. The 23-year-old assured those concerned that the family made appropriate arrangements in case she went into labour. 

"We contacted midwives in Texas while we were there just to be safe," Jill told People. "There is a lot of support there, and we felt secure being there."

She also prepared herself mentally and emotionally for a later-term delivery. "I have told myself, 'First-time moms often go a week and a half over, so don't get discouraged,'" she explained.

"When everyone else is asking you, 'When are you going to have that baby?' The baby will come when the baby comes."

Jill gave herself a secondary due date of April 5.

"[I'm] planning on the baby coming late, no big deal," she revealed. "If you have it in your head that way, you won't get discouraged."

Jill and Derick are expecting a son, although they have not announced the baby's name publicly.