<s>[INST] i THOUGHT THAT IT WAS MY SINUS PROBLEM THAT CAUSED ME TO FEEL SO ROTTEN AND COUGHING SO HARD IT HURT.  I WAS RUNNING A FEVER AND FELT REALLY ILL SO RESTED IN BED AND DRANK LOTS OF WATER.  ITS BEEN  3 WEEKS NOW AND ALTHO COUGHING IS BETTER I STILL FEEL EXHAUSTED AND ACHEY - SHOULD I SEE A DR.?? [/INST] Hi, dairy have gone through your question. I can understand your concern. You may have sinusitis.  You should go for ct scan. It will give you exact diagnosis and severity of disease. Then you should take treatment accordingly.  If needed you should take a course of antibiotics like cephalosporin or amoxiclav.  You should take antihistamines like chlorpheneremine palate or cetirizine to decrease secretion in sinus.  Consult your doctor and take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>