 [ Symptoms ] i have been coughing up blood today [ Disease ] u r smoker so there is different possibilities either problem in the chest it is self in the lungs airways or bleeding from the pharynx or u may start having gastric ulcer gastritis or reflux that causes inflammation in the oesophagus throat swab is imp up to upper endoscopy what other complains do u have any fever any pain in the abdomen heart burn dyspepsia pain related to food any chest pain any difficulty in breathing  waiting ur reply