Periods aren't identical from person to person, and that makes it easy to second-guess what's actually normal. Some months run heavier than others, cycles shift by a few days, and none of that necessarily means something's wrong. But when bleeding shows up between periods, lasts far longer than usual, or becomes heavy enough to disrupt daily life, it's worth a conversation with your O... https://www.noorobgyn.com/blog/abnormal-uterine-bleeding-causes-diagnosis-and-treatment-options