Hi there, my 11month DS has had a awful dry cough for 9 weeks now, we have been to see one Doctor that gave him a course of antibiotics which didn't work then we went to a different Doctor who gave him a chest xray to see if he had inhaled something or if there was any infection but there was neither. He told me that we just have to wait for it to go away. My poor DS wakes up every night coughing sometimes until he makes himself sick! and then he is cranky all day because he had a bad sleep. Should I get a 3rd opinion? Does anyone have any advice?