Meghan's envisaged role on a scheduled Monday trip to Fraser Island, off Queensland state in Australia's north, was unclear, with the palace statement saying only that "the Duke will continue with the engagements on Fraser Island".
The Duchess was expected to rest for the first part of the day while Prince Harry undertook several engagements focusing on environmental issues, before rejoining her husband for a reception.
The baby news was announced on the eve of the duke and duchess's first official visit outside the United Kingdom and Ireland.
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Despite her upcoming plans, Meghan has been "feeling fine", according to a source.
Meanwhile, this isn't the first time on the tour that Meghan has ditched her heels.
Meghan, 37, has cut back slightly on her tour schedule following last week's announcement that she's pregnant with the couple's first child. In fact, she also attended the royal wedding of Markle with Prince Harry.
Earlier last week she also surprised fans by trying her hand at AFL. "I'm sure she'll make a terrific mother", said the father of the Duchess. "If it has been a very late night due to unforeseen circumstances, we have to adjust for that".
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Amid criticism from Cruz about his position toward impeachment, O'Rourke was asked if he\ had changed his mind. "He's dishonest. "We can disagree while treating each other with respect, while treating each other with civility", he said.
Mr Alcott, who is a triple Paralympic gold medallist in wheelchair tennis and wheelchair basketball, said: "He said: "Shall I put them on?'".
Sources said to Us Weekly earlier that the prince encouraged Meghan to "slow down" when she was feeling exhausted around the time of the opening of the Invictus Games. "What's sad is that some time in the next year Meghan and Harry will have a baby and I'll be a grandfather", he said at the time.
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