Wondering if your period is overdue? Enter when your last period started and your usual cycle length — we'll tell you exactly where you stand, with calm, honest context.
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This tool estimates how many days past your expected period you are. It takes the first day of your last period and adds your typical cycle length to find your expected start date. If today is later than that date, the gap is how many days "late" you are — and roughly where you are in your cycle.
Cycle length naturally varies by a few days from month to month, so a period that arrives one to four days later than expected is usually still within a normal range. Tracking several cycles gives a far more reliable picture than any single month.
This tool gives general information and estimates only — it is not medical advice. If you have concerns about your cycle or a possible pregnancy, speak to a healthcare professional.
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Explore the calculators →A few days late is very common and usually nothing to worry about, because cycles vary month to month. Many clinicians only consider a period notably "late" once it's more than about 5–7 days past expected, and "missed" after around six weeks with no bleeding. If there's any chance you could be pregnant, a late period is a good reason to take a test.
Yes. Stress, big changes in weight, intense exercise, illness, travel across time zones, and disrupted sleep can all delay ovulation and push your period later. Starting, stopping, or changing hormonal contraception can shift your timing too.
Home pregnancy tests are most accurate from the first day of your missed period. If you test earlier and get a negative but your period still hasn't arrived, wait two to three days and test again — the hCG hormone that tests detect rises over time.
Common non-pregnancy causes include stress, weight change, PCOS, thyroid imbalances, perimenopause, breastfeeding, and some medications. An occasional late period is usually harmless, but frequent or prolonged irregularity is worth discussing with a doctor.
Yes — a variation of a few days between cycles is completely normal. A "regular" cycle doesn't have to be identical every month; it's the rough consistency that matters. Tracking over several months gives a more accurate average than any one cycle.