19 Kids ... And They Want More

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It's 19 kids ... and counting their blessings.

Seven weeks after baby Josie's surprise early arrival, at 25 weeks gestation, her relieved parents Jim Bob and Michelle Duggar are talking about the tiny micropreemie.

Born at 25 weeks to Jim Bob and Michelle, of the reality series changing its name to 19 Kids and Counting, little Josie Brooklyn was a mere 623g when she arrived on Dec. 10, after Michelle was diagnosed with preeclampsia.

"Years ago, a baby this small wouldn't have lived an hour," says Jim Bob, 44. "We are so grateful for the ability to help her."

He and Michelle, 43, have moved 17 of their other kids (their oldest Josh, 21, and his wife, Anna, 21, have a baby girl and live on their own) to Little Rock from their home in Tontitown, Arkansas, to be closer to Josie, who remains in intensive care at Arkansas Children's Hospital.

"It's a miracle she's doing so well," says Jim Bob. Agrees Michelle: "It is incredible what the doctors and nurses can do to save the life of this little person."

It has been an up and down saga of survival for tiny Josie. "Doctors tell us, 'never trust a preemie,' because you can't know what is going to happen," says Jim Bob. "It is a very day-to-day thing. It is the hardest thing we've ever been through."

Josie's difficult birth has brought the family closer together, say Jim Bob and Michelle, and they continue to be grateful for every moment they have with their new daughter.

The Duggars, who don't use contraception, remain committed to their belief that "each child is a gift from God" and are open to having more.

19 Kids and Counting airs on Discovery Home & Health, Thursdays, 9.30 PM.

For more on the Duggars and baby Josie, including exclusive photos, see this week's WHO Magazine, on sale Friday, Feb. 12.