Jinger Duggar pregnancy update: Is it a boy or a girl? 'Counting On' star's Instagram post sparks speculations

A screenshot of Jinger Duggar and Jeremy Vuolo in an interview on TLC's YouTube channel.YouTube/TLC

Jinger Duggar may have just revealed the gender of her first child with husband Jeremy Vuolo.

The "Counting On" star recently gave an update on how far along she is in her pregnancy. Sharing it on Instagram, Jinger boasted her baby bump and stood next to a chalkboard drawing which says she is 20 weeks along and her fetus is now the size of an artichoke. However, it was neither of those details that had fans talking.

Upon closely examining the photo, eagle-eyed followers noticed she used a color blue chalk for the word 'baby,' fuelling speculations that she may be expecting a boy.

"Does the blue chalk spelled baby mean anything...is it a hint maybe?" one fan commented on Jinger's post. "I say boy!" another one added.

Two weeks before Jinger's latest pregnancy update on the photo-sharing app, she also posted a photo informing her followers that she was 18 weeks along her pregnancy and that the fetus was already a size of a pepper. Again, the word "baby" was written in blue chalk.

While this could also be a simple coincidence, there have been other hints that support the baby boy speculation. For instance, Jinger once posted a photo of her husband sporting a blue shirt that read "promoted to daddy." The Duggar sisters seemingly have a pattern when it comes to baby genders as well.

Per Romper, Jill Duggar-Dillard first gave birth to two sons, Israel David and Samuel Scott. The trend continued with Jessa Duggar-Seewald who also has two sons –Spurgeon and Henry. Jinger's younger sister, Joy-Anna, gave birth to a boy last month as well, named Gideon.

Of course, it is possible that Jinger and Jeremy are just making predictions on social media. They did say they think they are having a baby boy, after all. Thus, fans should take these hints with a grain of salt. However, if these predictions and speculations are correct, Jinger would be the first Duggar daughter to welcome a daughter.