TLC's 19 Kids and Counting will have a new member to their big family, thanks to the oldest son Josh Duggar and his wife, Anna.

Anna Duggar, 24, takes a pregnancy test on an episode of 19 Kids and Counting: Duggars Do Asia, which premieres on Tuesday, but the test is negative.

According to People, Anna said, "I thought for sure I was pregnant and so I was a little disappointed. But two weeks later, I found out I was pregnant."

Josh and Anna have a 3-year-old daughter named Mackynzie and a 21-month-old baby named Michael.

"It is very exciting. It's fun for Michael and Mackynzie being so close in age and this baby will be, too. We feel very blessed and happy," Josh Duggar said, according to the magazine.

After Anna had a miscarriage in 2010, and Josh's mother Michelle and father Jim Bob had a miscarriage in 2011, Josh said there are fears with this pregnancy because there is always a risk.

Anna, who is six-months along her pregnancy, and Josh haven't shared the gender of the baby yet or whether or not they will also give this baby a name that starts with the letter "M." The Duggar family, like Josh, all have names that start with the letter "J."

Josh said, according to People, "We've been throwing around name ideas and we are pretty certain we have it down to two."