67 Year Old Female W Lupus (non-smoker). Exercise Four-five Times

67 year old female w lupus (non-smoker). Exercise four-five times per week. On Plavix because of left pontine stroke 4 yrs/9months ago. Noticed blood rather than mucus dripping from nose this morning, Then coughed up blood. Have coughed up blood twice within the past 15 minutes. Am concerned because my mother's lung cancer diagnosis (non-smoker) was preceded by coughing up blood.