"Counting On" star Jessa Duggar is expecting her second baby with husband Ben Seewald, who is due sometime in 2017. It looks like the 23-year-old Christian reality star's second pregnancy is making her feel nostalgic since she's looking back at the time she got pregnant with her firstborn Spurgeon Elliot last year.

On her Instagram account (@jessaseewald), the young mother posted side-by-side photos of herself when she was pregnant with her first baby in 2015 and her latest photo showing her pregnant with her second baby. In the photo at left, Jessa is seen wearing a white shirt during her 25th week of pregnancy with Spurgeon Elliot. In the other photo, Jessa is seen wearing a red shirt with her tummy looking significantly smaller. The latter photo was taken also during her 25th week of pregnancy.

Because of this, a lot of fans suspect that Jessa might be pregnant with a girl. "I feel like it's a girl this time," a fan commented. "Belly isn't so big this time around at 25 weeks." Another wrote, "I'm super excited for the baby to be born!! I think this time it's a girl!"

However, there were many others who insist Jessa is expecting another boy. They said Jessa should not listen to any old wives' tale about how to determine a baby's gender.

Some other fans are holding out hope that Jessa is pregnant with twins.

Having twins runs in Jessa's side of the family through her mom, Michelle, who gave birth to twins Jana and John-David. When Jessa was pregnant with Spurgeon Elliot, there was already a rumour circulating that she is expecting twins, and Michelle said she might have been the one who started it.

She and her husband Jim Bob were so thrilled when Jessa broke the news of her pregnancy that she told her daughter, "Who knows Jess, you may have twins!"

"Because in our family, twins kind of run in the maternal line and surely somewhere along the way one of the girls will possibly have twins," Michelle earlier told The Morning Blend.