Hi, i was diagnosed with tb before 10 years and was treated with antitubercular meds for 9 months, i never had any blood in sputum during my treatment or after it, after 5 years i had blood in the sputum and all sputum tests showed nedgative for tb bacteria, doc says it could be due to the bronchiactasis due to the scar tissue of my lung which starts bleeding if i am exposed to smoke, dust or respiratory infections like flu. i am on regular excercise routine.. should i be worried of a tb relapse???