I have been coughing up Phlem for 40 days now. Symptoms seem similar to whooping Cough just less surver whoops and coughing fits, although I did manage to injure my lower back while coughing. I've been to the doctors 3 times to get this sorted. On the second time they tested for whopping cough and on the third time they told me it wasnt whooping cough by the blood test but that I should make another apointment to get some other tests done such as an xray. My lungs hurt but i'm not sure if thats muscular or not. None of the phlem is infected, just really watery but causes alot of coughing. I was taking anti inflamitories for my back and that seemed to help the pain in the lungs. One of the doctors perscribed me codeine for the cough because he thought that this would help dry things out. Unfortunatly it didnt.