The Duke and Duchess of Cambridge have announced the due date for the royal sibling to Prince George and Princess Charlotte.
Kensington Palace announced: “The Duke and Duchess of Cambridge are delighted to confirm they are expecting a baby in April 2018.”
Many parents wait until after the end of the first trimester - about 12 weeks into pregnancy - before sharing the happy news with friends and family.
But the due date reveals that Kate was less than 12 weeks pregnant when she announced her pregnancy in early September 2017.Related articles
The early announcement came after she suffered from the same level of morning sickness as when she was pregnant with George and Charlotte.
The Duchess of Cambridge also rushed to announce her pregnancy early when she was expecting Prince George and Princess Charlotte.
As with her previous two pregnancies, the Duchess is suffering from Hyperemesis Gravidarum
Hyperemesis gravidarum, the type of morning sickness, usually begins between four and seven weeks into a pregnancy, although it can begin at any time within the first 12 weeks.
The due date in April 2018 suggests that Kate may have only been seven weeks pregnant when the pregnany was announced in September.
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At the time, Kensington Palace said: "Their Royal Highnesses the Duke and Duchess of Cambridge are very pleased to announce that the