The Duke of Cambridge, 35, gushed about the “very good news” while meeting with dignitaries at a policing and mental health conference in Oxford, England, on Tuesday (September 5).
Meanwhile, his wife Kate Middleton is experiencing severe nausea.
The Duchess of Cambridge, 35, is being cared for at their home in Apartment 1A in Kensington Palace as she battles Hyperemesis Gravidarum (HG). The expectant mum was also afflicted by the condition during her pregnancies with their older children — Prince George, 4, and Princess Charlotte, 2.
“There’s not much sleep going on at the moment,” Prince William admitted during their conference, before gushing about the “very good news.”
He added the couple had been able to “start celebrating this week” after “it was a bit anxious to start with.”
On Tuesday, the Duke of Cambridge spoke about mental health, and how his career as an air ambulance pilot encouraged him to make issues facing first responders “a focus of his work for many years to come.”
On Monday, Kensington Palace announced the royal couple’s pregnancy news.
“Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting their third child,” read the statement.
“The Queen and members of both families are delighted with the news.”
“As with her previous two pregnancies, The Duchess is suffering from Hyperemesis Gravidarum. Her Royal Highness will no longer carry out her planned engagement at the Hornsey Road Children’s Centre in London today.”
“The Duchess is being cared for at Kensington Palace,” the statement concluded.
The Duke and Duchess — who celebrated Prince George’s fourth birthday on July 22 — welcomed their daughter on May 2, 2015.