While blood in the stool is a common symptom of CMPA, it can also be caused by other factors, including anal fissures due to constipation, iron supplementation, or viral infections like rotavirus. If you see blood, monitor for other symptoms such as excessive crying, rashes, mucous in the stool, or lack of weight gain. It is best to consult your paediatrician to rule out infections or other digestive issues before assuming CMPA. Some doctors may recommend using damp cotton instead of wipes to rule out chemical irritation as a cause for minor streaks.