Had cough 8wk now like phlegm stick in throat but my abdomen/ribs are really sore/aching bad ??

Repeated coughing is: a big load on the intercostal & abdominal muscles. The primary lung cleaning mechanism is called the mucociliary elevator, study: http://goo.gl/IXDw19 for some understanding. If not working well enough, then mucous accumulates, dries out & coughing to help clear airway is the backup, yet places a big unusual exercise load on all the muscles involved; may weaken/sore & cough become less effective.