10/17/2013 at 04:00 PM EDT
So she's not invincible after all.
has been forced to cancel two concerts this week after being put on "vocal rest" by her doctor.
The 34-year-old, who's currently on her Truth About Love
tour, thanked fans via Twitter
for their support, saying, "Not very dramatic – doctor just wants me on complete vocal rest for four days to heal. So I can kick ass."
Her concert scheduled for Thursday in Salt Lake City has been cancelled as has Friday's show in Denver. They've been rescheduled for Oct. 29 and 30.
"Touring would be terribly easy if I lip synced," the singer joked in a follow-up message
While Pink is resting her voice, she'll also get to indulge in one of her favorite pastimes – napping with her 2-year-old daughter, Willow
, who's accompanying her on tour along with husband Carey Hart
"My favorite thing to do when I have downtime is sleep and play with my baby. And sleep alongside my baby," she said
last month. "I have the most beautiful baby that was ever born."