Former first lady Barbara Bush was hospitalized Saturday in Houston to undergo routine tests but doctors don't suspect anything serious, a family spokeswoman said. Bush, 84, was being treated at Methodist Hospital and should be released in a day or two, spokeswoman Jean Becker said late Saturday. "She hasn't been feeling well for about a week, and the doctors thought she should come in and undergo a battery of tests," Becker said. "It's not serious. She just hasn't been feeling herself and they're just trying to figure out why." Becker declined to provide details, but said former President George H.W. Bush drove his wife to the hospital Saturday morning after consulting with her doctors, according to a report of the Associated Press.