My cough has lasted for two weeks now?

ok, well about two weeks ago i had the worst cough ever, it started about friday and i had got back from a football game and i was feeling very cold and shaky and i just had the chills, plus i had a dry cough so i went to bed early and woke up the next morning with a slight fever and my cough persisted. the next day it felt like my ribs were so bruised i could barely breathe in, and plus my diaphragm muscles hurt. during that week it got a little better but i was still coughing, and it's been two weeks now and it's back to how bad i was coughing before. it's a dry cough? but sometimes it has phlegm in it, idk. does anyone have any idea what it could be, and should i go the doctor for it? thanks