How many days late is normal for a period?

A period can be up to 7 days late without being a major cause for concern, especially if you usually have irregular cycles. However, if you're sexually active, consider taking a pregnancy test if your period is more than a few days late.

Can stress delay your period?

Yes! Stress is one of the most common causes of a late period. Chronic stress can disrupt the hormones that regulate your menstrual cycle, potentially delaying ovulation and, consequently, your period.

How many days late should I take a pregnancy test?

Most pregnancy tests are accurate from the first day of your missed period. Early detection tests can work 5-6 days before your expected period, but for best results, wait until your period is at least 1 day late.

Can you have a late period and not be pregnant?

Absolutely! While pregnancy is a common cause, there are many other reasons for a late period including stress, weight changes, travel, illness, hormonal birth control, PCOS, thyroid issues, and perimenopause.

When should I worry about a late period?

See a doctor if your period is more than 90 days late, if you have three or more consecutive missed periods, if you experience severe pain or heavy bleeding, or if late periods are accompanied by other concerning symptoms.

Period Delay Calculator

Analyze why your period might be late and see if it's a sign of pregnancy or cycle variation.

Cycle-matched

Clinic-backed

Analysis will appear here

Enter your cycle dates on the left to analyze your delay.

Expected Period Date — waiting for your data

Delay Status — waiting for your data

Likely Cause — waiting for your data

Delay Confidence — waiting for your data

Symptom Analysis & Cycle History

Have you taken a pregnancy test?

Not yet

Negative

Positive

Current Date

Symptoms (select all that apply)

Missed period

Light spotting

Nausea

Sore breasts

Light cramps

Fatigue

Medications or Notes (Optional)

Understanding Period Delays

How We Calculate "Days Late"

We calculate your expected period by adding your average cycle length to the first day of your last period. The "days late" is the gap between today and that date.

Formula: Expected Date = Last Start + Cycle Length

Common Causes

Pregnancy

Stress

Weight Changes

PCOS

Birth Control

Thyroid Issues

Frequently Asked Questions

How many days late is "normal"?

Up to 7 days is considered normal variation. If your period is more than 7 days late and you are sexually active, take a pregnancy test.

Can stress delay my period?

Yes. Stress disrupts the hypothalamus, which regulates the hormones responsible for triggering ovulation and menstruation.

Test is negative but period is 10 days late?

Wait 3-5 days and retest with morning urine. If still negative, consult a doctor to check for PCOS or hormonal imbalances.

When should I see a doctor?

Consult a physician if your period is over 90 days late, or if you miss three consecutive periods.

Medical Disclaimer: This tool is for informational purposes and does not replace professional medical advice or clinical testing.

Medical Disclaimer: This tool is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider for personalized guidance about your fertility and pregnancy.

Period Delay Calculator

Analysis will appear here

Symptom Analysis & Cycle History

Understanding Period Delays

How We Calculate "Days Late"

Common Causes

Frequently Asked Questions

How many days late is "normal"?

Can stress delay my period?

Test is negative but period is 10 days late?

When should I see a doctor?

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