Cough half month is not good, feeling trachea has thing to cough not to give, how to do

Cough for half a month did not get better, I feel that something can not cough out of the trachea, think it is caused by tracheitis, bronchitis, pneumonia. You need to go to the hospital for blood routine and lung X-ray examination, confirmed disease. If pneumonia is caused, you can take oral cephalosporin and orange shell mixture treatment, control cough symptoms.