She tells TMZ she left her drink at the hotel bar to smoke, and came back to find it covered with a napkin.
Reid says she was unconscious for eight hours.
She is now urging people always keep an eye on their drink.
Rosemont police say they got a call for a sick person but have not confirmed any drugging.
ABC7 has reached out to the DoubleTree for comment, but did not immediately hear back.