Is my period late?
Enter your last period and cycle length to see exactly how many days late (or early) you are versus your expected date — and what a late period usually means.
Never be caught off guard again
MoodSwings predicts your period and tells you before it’s due — and flags it when you’re overdue. Track a couple of cycles and a “late” period becomes information, not a scare.
What a late period usually means
A period is typically called late once it’s about 5–7 days past its expected date, but an occasional late or skipped cycle is very common and usually nothing to worry about. If you’re sexually active and your period is late, a pregnancy test is the sensible first step, since this calculator can’t detect pregnancy — only your days past due.
When you’re not pregnant, late periods are often down to stress, poor sleep, travel, illness, intense exercise, weight changes, PCOS, thyroid issues, perimenopause, or starting or stopping birth control. See a clinician if your periods are frequently irregular, you miss several in a row, or something feels off — tracked notes make that conversation faster.
Questions people ask
How late can a period be before it’s a concern?
A period is generally considered late after about 5–7 days past its expected date, but cycles naturally vary. An occasional late or skipped period is common. If you’re sexually active and your period is late, a pregnancy test is the first step. See a clinician if periods are frequently irregular or you miss several.
Why is my period late if I’m not pregnant?
Common reasons include stress, poor sleep, travel and time-zone changes, illness, intense exercise, big weight changes, PCOS, thyroid issues, perimenopause, and starting or stopping birth control. A single late period is usually nothing to worry about.
Is this calculator a pregnancy test?
No. It only tells you how many days past your expected date you are, based on your cycle. It cannot detect pregnancy — only a test can do that. Treat the result as a prompt, not a diagnosis.
How can I stop being surprised by this?
Track a few cycles so you know your real pattern and expected date. MoodSwings predicts your period and warns you before it’s due (or overdue), so a late period is information, not a panic. Free to try on iPhone.