A period typically lasts about 2 to 7 days, with 3 to 5 days being the most common range for many people. The overall menstrual cycle, from the first day of one period to the first day of the next, is usually about 28 days on average, but it can range from 21 to 35 days and still be considered normal. Individual variation is common, and factors such as age, hormonal changes, and health can affect both the length of the period and the cycle. Key takeaways:
- Bleeding duration: commonly 3–7 days.
- Cycle length: commonly 21–35 days; average around 28 days.
- Heaviest bleeding often occurs in the first 1–2 days of the period.
If a period lasts consistently longer than 7 days, is unusually heavy, or you notice substantial changes in your cycle (very long gaps between periods, very short cycles, or severe pain), consider speaking with a healthcare professional to rule out possible conditions. Notes on variability:
- People under 20 and those over 40 may experience more variability in cycle length.
- Shorter or longer cycles outside the 21–35 day range can still be normal for some individuals, but persistent deviations warrant evaluation.
