Hi Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
Blood in stool is a very common symptom.Up to 15% of adults have seen blood on their toilet paper. However this has no relation with drinking carrot juice
As a general rule, bright red blood means that the bleeding has come from the area around the anus. If the blood is darker, it usually means that its origin is a bleed higher up the digestive tract.
Bleeding can be due to following reasons
1. Hemorrhoids( piles) is most common reason. They are swollen blood vessels in the
rectum or anus.
2.Anal fissures- a tear in intestine sometimes caused due to hard stool passage
3.Infection of intestines
4.Rarely it might be colon cancer
Most common cause of haemrrhoids & anal fissure is
constipation. Therefore laxatives should be used. Fibers in diet should also be increased.
If problem persists, you should visit a Gastroenterologist.
Colonoscopy should be done in that case to ruleout possibility of colon cancer.
Don't worry you would be fine
Hoping your query is solved.