Which symptom indicates a potential need for medical attention regarding menstrual flow?

Answer

Soaking through a pad or tampon every hour for several hours

Heavy bleeding that requires changing a pad or tampon every hour for several consecutive hours is considered excessive and is a specific indicator that necessitates professional medical advice. While mild cramping and slight variations in cycle length are within the realm of normal experience, the inability to manage blood loss with standard hygiene products suggests a need for clinical investigation to rule out health issues.

Which symptom indicates a potential need for medical attention regarding menstrual flow?
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