Well.Do you have any other symptom such as pain at defecation or anemia? IF you do then you should do colonoscopy
as soon as possible, but you need to know that the most blood in the stool is benign and caused by hemorrhoids or fissurae or polyps so there is no need to worry. Also colon cancer
is more often at +50 age. But in future you should definitely do often workups.
Wish you good health.