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A normal menstrual cycle is 28 days, but anything plus or minus seven days is considered normal, making it possible to have two periods in one month as little as 21 days apart, according to eMedicineHealth. However, if p... More »

www.reference.com Health Women's Health Menstruation

According to HealthCentral from Remedy Health Media, there are several possible causes for having two periods in one month. A change in birth control methods can contribute to irregular periods, as can intense exercise, ... More »

www.reference.com Health Women's Health Menstruation

The most common reason for having two periods in one month is when a woman has a short cycle and one period occurs at the beginning of the month, and then about 24 days later, another occurs at the end of the month, acco... More »

www.reference.com Health Women's Health Menstruation
similar articles

The most common reason for having two periods in one month is when a woman has a short cycle and one period occurs at the beginning of the month, and then about 24 days later, another occurs at the end of the month, acco... More »

www.reference.com Health Women's Health Menstruation

According to HealthCentral from Remedy Health Media, there are several possible causes for having two periods in one month. A change in birth control methods can contribute to irregular periods, as can intense exercise, ... More »

www.reference.com Health Women's Health Menstruation

A woman who experiences two periods in one month may be reacting to a medication, have thyroid imbalances such as hypothyroidism or hyperthyroidism, or suffer from uterine polyps or fibroids, according to EmpowHER. Extre... More »

www.reference.com Health Women's Health Menstruation

A regular menstrual cycle starts 28 days after the previous cycle began. The first day of a menstrual cycle is considered to begin on the first day of regular blood flow. More »

www.reference.com Health Women's Health Menstruation