<s>[INST] Hello, I can not stop coughing.  For the past five years I have always had a cough.  Lately, I have been coughing more often and it is only getting worse. I have been to the mds office and even though I am prescribed medicine it is not working.my body aches from coughing so much.  I cough up clear phlem and sometimes it is stained with blood. [/INST] Hello, welcome to Chat Doctor ideally cough should subside with the medication but if it is not subsiding, some investigations need to be done which are-chest x Reinhardt lungsbronchoscopy(to look for foreign body)also sputum smear for tuberculosis you need to undergo an antibiotic course if you have not taken. Further management will be planned after findings in the investigations. Hope this helps thank you </s>