Jessa Duggar’s due date is so soon! The Counting On star just posted new side-by-side pregnancy photos on Instagram. And her baby bump is getting huge.

Jessa's new pic compared her 36-week baby bumps in her first and second pregnancies. Jessa and Ben Seewald now have just four short weeks to prepare for their second child’s February arrival.

IS JANA DUGGAR COURTING? CLICK HERE FOR DETAILS ...

Jessa Duggar Pregnancy Photos Jessa Duggar posted these comparison photos of herself at 36 weeks pregnant.

Counting On fans had previously speculated that Jessa was having twins. But Jessa put those rumors to bed when she posted an ultrasound picture of just one baby.

Now Counting On fans are trying to tell if Jessa’s having a boy or girl based on her latest baby bump photos. While some think that Jessa and Ben are having another son, most Counting On fans believe that Jessa is pregnant with a daughter because she’s carrying higher during this pregnancy.

But Jessa and Ben have previously said that they might keep the sex of their child a secret until Jessa gives birth. “We might just keep it to ourselves,” Ben said.

IS JILL DUGGAR HAVING TWINS? DETAILS ...

So how are Jessa and Ben preparing for their second child? Well, they still have to pick out a name. “We talked about family names,” Jessa said. “Maybe Benjamin Michael the second, But Ben didn’t like that. We’ve talked about incorporating a family name.”

Jessa and Ben don’t want to do a letter theme like her parents did, though. “The only theme we might have are using names of heroes from the Christian faith,” Jessa added.

Jessa Duggar Due Date How are Jessa Duggar and Ben Seewald preparing for baby number two? That's what 'Counting On' fans are wondering as Jessa's February 2017 due date gets closer.

But Ben said on Counting On, “We really have no ideas for names at this point. So, maybe we will have to get some suggestions at some point.”

No matter what name they choose for their son or daughter, Jessa and Ben are happy, but nervous, about adding to their family. “We’re excited, but at the same time, I’m like: ‘I hope I’m ready for this,’” Ben said. “How is it going to be having two kids, two young little babies?”

CLICK HERE TO SEE JILL AND JESSA'S ADORABLE BABY BUMP PHOTOS ...

What do you think Jessa Duggar should name her baby? Let us know your take in the comments section below!