A man is facing an arson charge for allegedly starting a fire inside an Opelousas hospital. Gerald Bihm Jr., 21, of Opelousas, is charged with aggravated arson. The Opelousas Police Department reported the fire happened at Opelousas General Hospital South Campus on Saturday, September 13, a little before 5:45 p.m. Authorities said the fire started in a bathroom attached to an emergency room…