A period is considered late if it is more than 7 days past the expected start date based on a person's usual cycle, which typically ranges from 24 to 38 days. If a period is absent for 6 weeks or more, it is usually classified as a missed period. Variations of a day or two late are often normal and not cause for immediate concern. However, a late period beyond a week should prompt consideration of pregnancy or other factors such as stress, weight change, exercise, hormonal birth control, or medical conditions. If a period is more than 35 days delayed, it is generally considered late, and persistent delays or absence of periods (missed periods) may warrant medical advice to rule out underlying health issues. Pregnancy is the most common reason for a late or missed period, but other factors can also cause delays without pregnancy. In summary:
- Period late by up to 1-2 days: usually normal.
- Period late by 7 or more days: considered late.
- Period missed for 6 weeks or longer: considered a missed period.
- Causes can range from pregnancy to lifestyle or health conditions.
If a period is late by more than a week or if there are symptoms or irregularities, it is advisable to take a pregnancy test and consult a healthcare provider if needed.
