The pop superstar was scheduled to perform at Des Moines’ Wells Fargo Arena on October 24. A few days earlier, she announced she would postpone four shows in Lincoln, Nebraska; Sioux Falls, South Dakota; Milwaukee, Wis.; and DesMoines.

Why did Pink cancel her Des Moines show at Wells Fargo Arena?

In recent months, Pink said she has been performing with a torn bicep and two torn meniscus. Pink said she was “deeply sorry” to those who bought tickets for the canceled shows. She said she has been in a lot of pain and needs to slow down to take care of her.

“This is a love letter and an apology to those who had tickets for the show that I canceled,” Pink said on Instagram Thursday evening. “You deserve to be recognized, seen and cared for.”