We feared the worst, Madonna’s family members said in apparent anguish, describing the seriousness of the Queen of Pop’s health, who was admitted to intensive care with a serious infection.

According to the DailyMail, the 64-year-old was found unconscious in New York on Saturday and was rushed to ICU where she was reportedly intubated overnight.

On Wednesday, her manager Guy Oseary announced that she was suffering from a “serious bacterial infection” and needed time to recover, thus postponing her tour, which was set to begin in Vancouver on July 15.

A relative of the singer told DailyMail.com that it had been a traumatic few days, not being sure she would make it.

The same person added that it was a shocking collapse that could be a wake-up call for Madonna, who believes she is “invincible” and is pushing herself extremely hard to prepare for the tour.

“For the last two days, no one really knew what was going to happen and her family was preparing for the worst. That’s why it’s been kept a secret since Saturday. Everyone believed we might lose her and that was the reality of the situation,” said the same person.

Madonna is a mother of six, and Lourdes, the eldest of her children, was by her side throughout her hospitalization, the New York Post reported.

Madonna has three sisters – Paula, Melanie and Jennifer – and four brothers, Anthony, Martin, Christopher and Mario.

Anthony died in February of throat cancer and respiratory failure, aged 66.

The Ciccone siblings are keeping a low profile, keeping the spotlight on their relationship with the megastar.