A delayed period, when your period is later than expected, can be caused by various factors including pregnancy, stress, hormonal changes, weight fluctuations, or certain medical conditions. While a few days late is usually normal, if your period is significantly late or you have other symptoms, it's best to consult a healthcare professional. Possible Causes of Delayed Periods: Pregnancy: This is the most common reason for a missed or delayed period, especially if you've had unprotected intercourse. Stress: Both physical and emotional stress can disrupt your menstrual cycle. Hormonal Imbalances: Conditions like Polycystic Ovary Syndrome (PCOS) or thyroid disorders can affect periods. Weight Changes: Significant weight loss or gain can interfere with your cycle. Medications: Some medications, like birth control pills or certain psychiatric drugs, can cause irregular periods. Lifestyle Factors: Excessive exercise, poor sleep, or traveling across time zones can also delay your period. Medical Conditions: Conditions like endometriosis or pelvic inflammatory disease can cause irregular or delayed periods. Perimenopause: The transition to menopause, usually between the ages of 45 and 55, can cause irregular cycles.