Getting two periods in one month is not uncommon, but it may indicate an underlying issue. Here are some possible causes of having two periods in one month:

• One-time anomaly: A person may occasionally have a shorter menstrual cycle that includes two periods in one month. Following this, their periods may return to their regular cycle.

• Young age: Irregular menstrual cycles are common in young people who have just started to have periods. People tend to have shorter or sometimes longer menstrual cycles during puberty, which may lead to them having two periods in one month.

• Pregnancy: It is possible that bleeding twice in a month can signal pregnancy. Causes of bleeding during early pregnancy include implantation bleeding, where the embryo implants itself in the uterus.

• Thyroid disorders: Both an underactive or overactive thyroid gland can cause a womans period to come twice in one month.

• Structural problems: Uterine fibroids or cysts can cause extra bleeding that can be mistaken for a period.

• Missed birth control: If a woman forgets to take her birth control, she may experience two periods in one month.

• Stress: Stress can cause hormonal imbalances that can lead to irregular periods.

• Cancer: Although not as common as other reasons, menstrual changes (including two periods in one month) can sometimes be a sign of cancer.

If a woman frequently has two periods in one month over the course of 2 to 3 months, she should see a doctor. People should also speak to a doctor about heavy bleeding, such as passing blood clots that are the size of a quarter or larger or bleeding through one or more pads or tampons every hour.