Menstrual bleeding typically lasts between 2 to 7 days. The flow and duration can vary based on factors such as age, hormonal balance, and overall health. Most people bleed for three to five days, but a period lasting only three days to as many as seven days is usually not a cause for worry. Blood varies in color from bright red to a darker red or brown. ^{verywellhealth.com}+2 ^{3 1 2}