7. Rectal bleeding or blood in the stool

A common sign of colorectal cancer. Blood in the toilet should be a big enough sign to see a doctor immediately.
8. Lumps in the neck, underarm or groin area

Swollen lymph nodes indicate changes in the lymphatic system which can lead to cancer.
9. Excessive bruising or bleeding that doesn’t stop

Suggests abnormalities with the platelets and red blood cells, which can be a sign of leukemia. Leukemia cells crowd out red blood cells impairing your blood’s ability to carry oxygen leading to clots.