11 Cancer Warning Signs

7. Unusual Bleeding or Discharge 

A common symptom in early or advanced cancer is unusual bleeding. Coughing up blood could be a sign of lung cancer. Dark, black, or blood in the stool could be a symptom of rectal or colon cancer. Abnormal vaginal bleeding is usually a cancer warning sign in the endometrium or cervix. Bloody discharge from the nipples is a common symptom of breast cancer, and blood in the urine could be kidney or bladder cancer.