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Michelle and Jim Bob Duggar can't yet confirm that their 20th child is on the way, but the couple says they are trying very hard to make that happen.

During an appearance by the whole family Friday on the Today show, Michelle said that while she "would love to" announce some exciting baby news, she's not able to at this time. But she reiterated that she and her husband have no intention at stopping at 19 kids. "We would love more -- if the lord saw fit to give us more -- and so we'll wait and see."

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To that, Jim Bob added, "It is fun trying though." This prompted Today anchorwoman Savannah Guthrie to respond, "Jim Bob, you sly dog, you."

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Michelle -- who was expecting her 20th child but suffered a miscarriage last December -- was asked to elaborate on the possibility that she won't be able to get pregnant again. "I think that it will be a sad day for me whenever I know that we're not able to have any more. But we’ll look forward to grandbabies."

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The 19 Kids & Counting season six two-part premiere airs Tuesday August 28 at 9 p.m. on TLC.