Does dry underwear mean menstruation is coming?

Generally, dry underwear may be one of the signs indicating an upcoming menstrual period. If this occurs 1–2 days before menstruation and the menstrual cycle is regular, it is usually normal. However, if dryness persists for a prolonged period and is accompanied by delayed menstruation, it may be related to hormonal imbalances. If concerned, it is advisable to consult a healthcare provider early. Detailed explanations are as follows:

If occurring at the end of the luteal phase—about 1–2 days before the expected onset of menstruation—dry underwear is typically due to changes in estrogen and progesterone levels. Prior to menstruation, cervical and vaginal mucosal secretions significantly decrease compared to the ovulation period (when discharge increases, becoming thin and watery), leading to drier underwear. This aligns with normal physiological changes before menstruation, and no special concern is needed if the period arrives on time.

If underwear remains dry for over a week, menstruation is delayed by more than seven days, or if vaginal discharge has consistently been very low, it could indicate low estrogen levels or ovarian dysfunction. Hormonal imbalances can affect mucosal secretion production, manifesting not only as dry underwear but also potentially causing irregular menstrual cycles and reduced menstrual flow. These symptoms are not typical signs of normal menstruation, and further medical evaluation is necessary to determine the underlying cause.

In daily life, tracking menstrual cycles and changes in vaginal discharge can help determine whether dry underwear is related to the menstrual cycle. If persistent dryness and menstrual irregularities occur, timely medical consultation is recommended to assess hormone levels and ovarian function, preventing delays in appropriate management.