After being rushed to the hospital on Thursday night following her appearance on The Late Show, Selena Gomez has tweeted a message to her worried fans.  "Feeling much better, thank you all for being so understanding," she wrote on Monday. "Can't wait to see you all today at Santa Monica Place for the Monte Carlo kick off."

Selena Gomez

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According to TMZ, who spoke with a source close to Selena, she underwent a number of tests for blood pressure issues, but doctors could not determine the cause of her illness.  Many began to speculate that the star was pregnant, which TMZ says is "totally untrue", and Us Magazine reported that she was hospitalized for "food poisoning coupled with exhaustion."

Related article: Selena Gomez Rushed to the Hospital!

Glad to see she's doing better!

Photos courtesy of Fame Pictures