Why Are My Periods Late? Know The Causes Here

By Varun Verma
2023-03-17,16:40 IST

The menstruation cycle typically lasts 28 days, starting with your first period and concluding with your last. But it can even last for 38 days. If your period occurs later than this or, on average, it is deemed late. Here are five causes of late periods you should know.

Polycystic Ovary Syndrome (PCOS)

PCOS is one of the common reasons you have late periods. Because of this condition, your body produces more testosterone, which causes ovaries to develop cysts, delaying periods.

Body Weight

Your weight significantly influences your menstruation cycle. You may experience a postponement in your menstruation if you are overweight or underweight.


You might have delayed periods if you are stressed. This is because, in stress, your body creates cortisol, affecting your reproductive system.

Thyroid Problems

Thyroid conditions like hypothyroidism or hyperthyroidism can also lead to late periods. This is due to the thyroid's influence over your body's metabolism, which also affects the amounts of your hormones.

Birth Control Pills

Taking birth control pills can also interfere with your menstruation cycle. This is because the oestrogen and progestin in these pills prevent your ovaries from releasing eggs.


For an accurate prognosis, it is best to note your menstrual cycle; if your periods are late, you should see a gynaecologist.