PRINCE WILLIAM’s beautiful bride Kate is bravely hiding her heartbreak from the world after suffering a tragic miscarriage, The ENQUIRER has learned.
During the newlyweds’ whirlwind 11-day visit to California and Canada, Kate couldn’t contain her smiles while she hid her big secret – docs had confirmed she was in the early stages of pregnancy.
But insiders say that 13 weeks after her spectacular marriage at London’s Westminster Abbey, joy turned to heartbreak as  Kate,29,  lost her baby.
Sources reveal soon after the royal tour, Kate was rushed to a private clinic feeling sick and complaining of headaches – she was suffering a miscarriage.
William – who’ll be heading to the Falkland Islands next year for at least a two-month tour of duty – was called to her bedside from his air base in Wales, 150 miles away, where he’s an R.A.F. search and rescue helicopter pilot.
“He was flown south then driven to London’s famed Harley Street where doctors were nursing Kate through her ordeal,” says an insider.
The source says Kate was thrilled when she discovered she’d become pregnant in May during their idyllic two-week honeymoon in the Seychelles Islands.
Hours before the newly titled Duchess of Cambridge and Prince William touched down in Ottawa,  and, on June 30, doctors had confirmed she was expecting.
“You could see the joy on their faces,” says a royal source. “They looked so happy and so in love.By the time they reached California, Kate was excited beyond belief at the prospect of becoming a mother for the first time.”
Kate – worried that she was too thin to conceive – had made a Trans-Atlantic call to set up a secret meeting with a top Beverly Hills fertility specialist.
“But as soon as she and William found out they were in the family way, Kate was thrilled to be able to cancel her appointment,” says the source.
“Little did they realize their happiness would be so short-lived.”
At 5-foot-10 Kate only weighs 98 pounds – far below a healthy weight of 132 to145 pounds.
“Now friends believe her weight loss almost certainly triggered the miscarriage.”