Irregular Periods and Fertility: When to Seek Medical Advice

A regular menstrual cycle typically ranges between 21 and 35 days from the first day of one period to the first day of the next.

Cycles that consistently arrive earlier than 21 days, later than 35 days, or fluctuate unpredictably indicate irregular ovulation. Without regular ovulation, timing intercourse for pregnancy becomes nearly impossible.

Causes of cycle irregularities include PCOS, thyroid dysfunction (hypothyroidism or hyperthyroidism), elevated prolactin levels (hyperprolactinemia), significant weight fluctuations, and diminished ovarian reserve.

Seeking a medical evaluation is recommended if your periods are irregular, especially if you are planning to conceive, as simple blood tests and pelvic ultrasound can rapidly identify the root cause.