People think this Instagram post is a clue about Meghan Markle’s due date

In case you haven't heard, Meghan Markle and Prince Harry are expecting their first child.

The couple revealed their happy news in a statement from Kensington Palace on Monday, confirming that the 37-year-old is due to give birth in spring 2019. Since this could mean any time between March 20 and June 21, royal fans soon began to try and pin down and Meghan's exact due date. A source had previously told People that the Duchess of Sussex had already had her 12 week scan (and was "feeling well"), leading many people to believe she was three months along. However, a new Instagram post from Meghan and Harry's royal tour has revealed she may be further along than previously thought. Australian singer-songwriter Missy Higgins posted a photo of herself meeting the royal mum-to-be during the Duke and Duchess of Sussex's tour of Australia and New Zealand. In the caption, she called Meghan a "trooper" for doing "all these meet-and-greets while 4 months pregnant." https://www.instagram.com/p/Bo_Z79vnbgL She wrote:

“What an honour to meet the beautiful Duchess today! “She was such a sweetheart. I said I felt sorry for her having to do all these meet-and-greets while 4 months pregnant! What a trooper. "Prince Harry was gorgeous too, a real charmer. He squeezed Luna's legs and said, 'who's this little cutie?' "Looking forward to telling Luna she slept through it all one day."

It is not clear if Missy accidentally let Meghan's real due date slip, or if she was simply speculating about when the baby will be born. But, if Meghan is four months along in her pregnancy, this would mean that the baby is due in March rather than April. One thing's for sure, though: Kensington Palace won't be confirming her due date until the baby is born.