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(WENN) - Actress/singer Jana Kramer was hospitalized on Saturday after developing a high fever.

The former One Tree Hill star, who has since carved out a career as a country singer, was due to perform in West Palm Beach, Florida, but she began feeling sick before taking to the stage at a country Christmas concert.

In a post on her Twitter page, she wrote:

My how the day has changed. I am now sick with 101 fever and getting ready for this show is a challenge.

— Jana Kramer (@kramergirl) December 1, 2012

Kramer cut her set short and was taken to a nearby medical facility, but she continued to keep fans updated on her condition.

She tweeted:

I'm so sorry West Palm I had to cut my set short and had no voice! Ill make it up to y'all I promise! Thanks for helping me thru this bug!

— Jana Kramer (@kramergirl) December 1, 2012

Alright so here's the update! I'm okay. I'm on morphine and lots of liquid and other stuff. #dehydration #flu #etc !Thanks for the love!

— Jana Kramer (@kramergirl) December 2, 2012

And this is how I am spending the night before my birthday! twitter.com/kramergirl/sta…

— Jana Kramer (@kramergirl) December 2, 2012

Kramer was discharged from the hospital on Sunday, her 29th birthday, but pulled out of playing a show in Tampa, Florida that evening in order to recover.

Returning to Twitter, she explained to fans:

Terribly sorry I'm missin the show tonight in Tampa. I got out of the hospital this morning &still really sick. I will make it up to y'all.

— Jana Kramer (@kramergirl) December 2, 2012

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