Jill Duggar and Derick Dillard voiced their thoughts having more children in their growing family.

In April, Jill and Derick welcomed their son Israel David pursued their mission trip in Central America, according to People. Following their volunteership at a children's home, Derick revealed that he and his wife were excited to see where the journey took them and what the future looked like

For Derick, he thought that it was really a place where they could have grown as a family.

While on their extended mission trip, Jill revealed that they could possibly expand their growing family with one two new family members. In the same interview, she said that they had come down to Central America as a family of three. She added that they could have gone home as a family or four or more.

Jill also made some clarifications on rumors saying that she was pregnant for a second child. She confirmed that she was not pregnant, as everyone always asked.

In August, Jill was rumored to be expecting a second baby after she took to Instagram a video of herself playing with Israel David. According to the fans' comments on her post, she could be seen pushing her 4-month-old Israel on a playground toy in the clip and appeared to be sporting a baby bump under her loose-fitting shirt.

The couple is also considering adoption, just like what Jessa Seewald's desire. In February, Seewald told People that if God blessed her and her husband Ben with biological kids of their own, it was not going to quench their desire to adopt. She added the they hoped to adopt a lot of kids.

On the Dec. 27 episode of "Counting On," Jessa and Ben revealed that they plan to pursue their research about adoption in the coming year.