Michelle Duggar, mother of 19 children and grandmother of three is still hoping to add to her supersize brood. People magazine has an exclusive sneak peak of this week’s episode of “19 Kids & Counting” and in it Duggar, 47, reveals that she husband Jim Bob, 48, visited a fertility doctor.

“Conception is not totally impossible, but most unlikely,” she confesses.

“We’ve always put this in God’s hand,” Jim Bob says in the clip, “and if God wants to give us more children, we are going to be happy either way.”

The Duggars children range in age from 4 to 25, including five children under the age of 10.

The youngest, Josie, was born prematurely but is now fine. They lost their 20th child to a miscarriage in 2011.