Jill Duggar and husband derick dillard made a very big announcement on Wednesday. The "Counting On" stars are ending their two-year missionary stint in El Salvador and will now be staying in the United States indefinitely.

"New Direction in Ministry"

Jill and Derick made this big announcement through a blog post entitled "New Direction in Ministry." They thanked those who supported them by giving financial donations during the time they've spent in El Salvador.

Jill and Derick first left the U.S. for Central America in 2015. At the time, the Duggar family was still reeling from Josh Duggar's molestation scandal and the cancellation of their long-running reality show, "19 Kids and Counting." Jill and Derick, then new parents to their first baby Israel, moved their little family to the mission field.

In the blog post, Jill and Derick enumerated the various projects they've started in their local community in El Salvador, such as sports and livelihood programs. However, they explained that God is leading their "full-time ministry back to the United States." They gave no further reason for their decision.

They returned to the U.S. last May, in time for Jill's sister Joy-Anna Duggar's wedding. They opted to stay longer so Jill could give birth to their second son Samuel, who just turned one month old.

Duggar fans fear that Derick, Jill, and baby Samuel are not okay

Due to the lack of explanation as to why Jill and Derick are suddenly quitting the mission field, Duggar fans are worried that there's something that the family is not telling.

In the Facebook fan page "Duggar Family News: Life is not all pickles and hairspray," fans speculated that the Dillards may be experiencing major health problems.

"Something happened with either Jill or the baby that they now need to stay in the States," one fan surmised.

Last month, Jill gave birth via C-section to baby Samuel.

Fans noted that the family opted to wait one whole week before releasing baby photos. And up to now, Jill hasn't shared her birthing experience with her followers. This is unusual for the Duggars, who would normally share huge family news such as weddings and births immediately on social media.

Fans also pointed out that Derick may also need urgent medical attention.

In one of the episodes of last season's "Counting On," Derick opened up about his health issues and was even filmed throwing up while jogging.

The Dillards' announcement came with a new family picture, showing the couple, two-year-old Israel, and their new baby Samuel. Fans quickly jumped in on the photo and commented how Derick is looking frail and gaunt in the picture.

Jill and Derick Dillard will return to television with a brand-new season of "Counting On" in September.