The couple, who was moved by a recent visit to an orphanage in China, says it's actually their own children pushing them to have more kids.
"The kids are definitely pushing towards wanting us to open our home up to another child or more," Michelle says. "They see how much we have been blessed with and how little so many children have and they want to share. We tell our children that would have to be something that is God's will for our family, and we will see if it is. Our children love children, and we all do."
Though there are no immediate plans for adoption, Michelle stresses that they are definitely "open" to it.
"We are open to whatever is in store. It doesn't really matter whether I would have another child or we would adopt, but we want to approach it with an open heart," she says. "We have friends that have adopted children who are a great influence in our lives, and we have talked about their experiences. So it's something we've considered. We have to know for sure that is what God wants for us to do."
The Duggars' eldest son Josh, 25, and his wife, Anna, 24, recently announced that they are expecting their third child in June.