Late Period Calculator

What is Considered a Late Period?

A period is generally considered late if it hasn't started within 5 or more days of your expected start date. Since cycle lengths can vary naturally, a variation of a few days is usually not a cause for concern.

Common Causes of a Delayed Menstrual Cycle

While pregnancy is a common reason for a missed period, several other factors can cause delays:

• Stress: Chronic stress can alter the production of gonadotropin-releasing hormone (GnRH), interfering with ovulation.
• Weight fluctuations: Significant weight loss, low body weight, or obesity can disrupt hormonal balance.
• Polycystic Ovary Syndrome (PCOS): A hormonal disorder that can cause irregular, infrequent, or prolonged menstrual periods.
• Birth control: Starting, stopping, or changing hormonal contraceptives can affect your cycle.
• Thyroid issues: An overactive or underactive thyroid gland can cause menstrual irregularities.

When to Take a Pregnancy Test

If your period is late and you are sexually active, the most reliable time to take a home pregnancy test is one week after your missed period. Testing too early can result in a false negative if hCG levels aren't high enough yet.

When to Seek Medical Advice

Consult a healthcare provider if you miss three or more periods in a row, if your periods suddenly become irregular after being regular, or if you experience severe pain, fever, or unusual discharge.