Robin Lumley, childless, overweight and unmarried at 46, arrived at an emergency room in University Community Hospital in Carrollwood (FL) 2 1/2 years ago complaining of terrible abdominal pain. A short while later, the medical staff at the hospital found that she had delivered a 6-pound baby girl into the toilet although Lumley did not know she was pregnant. Now the hospital is being sued, and plaintiffs contend that baby Brianna Rose Lumley went into respiratory arrest and suffered brain damage due to treatment providers' negligence.