Starting a period days early can be caused by several factors, most commonly related to hormonal changes. Common reasons include:
- Hormonal imbalance due to puberty, perimenopause, or irregular cycles especially in young women who are still establishing regular periods.
- Stress and changes in routine or sleep schedules can disrupt hormone regulation and cause periods to come early or late.
- Changes in diet, exercise, or significant weight fluctuations can affect hormone levels and menstrual timing.
- Certain medical conditions such as polycystic ovary syndrome (PCOS), thyroid disease, or endometriosis may lead to early or irregular periods.
- Birth control methods, medications, or hormonal treatment can also cause bleeding earlier than expected.
- Occasional early periods are usually normal, but if they become frequent or are accompanied by other symptoms, consulting a healthcare provider is advised.
In summary, starting a period early is often a sign of hormonal fluctuations from various lifestyle, physiological, or medical factors.
