Brooke Mueller, Charlie Sheen's wife has been hospitalized early today after having premature contractions. Her rep is saying she's doing fine and will soon leave the clinic. "Brooke is at a Los Angeles-area hospital, where she was admitted yesterday morning with premature contractions " which is not all that unCommon for someone at this stage of pregnancy, especially with twins," says publicist Stan Rosenfield. "She's fine and is