Tori Spelling was admitted to a Los Angeles-area hospital on Tuesday, where she is undergoing tests for chronic abdominal pain, a rep for the Tori & Dean: Home Sweet Hollywood star has confirmed.

The 36-year-old actress went to the hospital Monday evening after experiencing pain. She returned to the medical facility this afternoon when her condition didn’t improve overnight.

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“They released her last night,” the rep said in a statement. “She wasn’t feeling better today so she returned to the hospital for more tests.”

Tori had been scheduled to host the Lambda Legal Awards this evening, but had to cancel last minute because of her illness.