Pregnancy: If you are sexually active and your period is late, it could be a sign of pregnancy. You can take a home pregnancy test to confirm
Stress: Stress can cause hormonal imbalances in the body, which can affect your menstrual cycle and delay your period
Weight changes: Significant changes in weight, either weight gain or weight loss, can cause hormonal imbalances and delay your period
Thyroid disorders: Thyroid disorders such as hypothyroidism or hyperthyroidism can cause menstrual irregularities, including late periods
Polycystic ovary syndrome (PCOS): PCOS is a hormonal disorder that can cause irregular periods, missed periods, or delayed periods
Perimenopause: As women approach menopause, their menstrual cycles may become irregular and periods may be late or missed altogether