She called off the performance on her Beautiful Trauma tour in Sydney after coming down with a chest infection.
The 38-year-old had been snapped by paparazzi photographers enjoying a day with her family on a beach in Byron.
Speculation followed about why she'd cancelled prompting Pink to respond on Instagram.
Next to a photo of herself and her daughter, Willow, she wrote: 'I scheduled this tour meticulously, trying to do what was best for my children, while also putting on the best and most physically demanding and beautiful show of my life."
