The singer was scheduled to perform in New Philadelphia, Ohio on Thursday and Carmel, Indiana the following night, but she scrapped the gigs after a painful treatment at the dentist.
In a series of posts on Twitter, she writes, "Waiting on the endodontist to meet me and do a nighttime root canal. This is one of the craziest things I've ever been through. Trying to keep my mind off the pain & what's about to happen by saying hi to you guys. Life does not work on the right schedule sometimes. This is such bad timing!!!!!... Wish me luck."
Detailing the procedure, she later tweeted, "I got 3 shots in the roof of my mouth & 1 INSANE shot directly into the half dead, half ALIVE nerve through the hole he drilled on the backside of my tooth. That was after the 7 shots in the front of my mouth that didn't phase me. I can't get numb so the lengths they must go to in order to get me there are nuts.
"So sorry to my sweet fans. We'll make it up any show missed as soon as we can. I'm in bed, have been & trying to alleviate the pain."
Rimes also canceled an appearance at Ohio's Lancaster Festival on Saturday night to recover, and on Sunday she revealed she faces further treatment.
She told her Twitter followers, "Going into an 8 hr surgery tmrw .....beyond anxious. Thank goodness for a rocking Anesthesiologist."
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