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According to the Mayo Clinic, menstrual flow may normally occur as often as every 21 days, and menstrual cycles tend to become shorter with increasing age. That being the case, menstruating twice in a given month is not ... More »

www.reference.com Health Women's Health Menstruation

According to WebMD, it is possible, though not standard, for a woman to have her period twice in one month. Because of the additional blood loss, this problem is sometimes accompanied by anemia. Causes of frequent period... More »

www.reference.com Health Women's Health Menstruation

A typical menstrual cycle is between 24 and 34 days long. However, some women have an even shorter cycle which can cause two periods in one month, according to the New York Times. While a short menstrual cycle can be com... More »

www.reference.com Health Women's Health Menstruation
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It is possible for women to have two menstrual cycles per month according to the U.S. Department of Health and Human Services. This can occur either if she has it at the very beginning of the month and then again at the ... More »

www.reference.com Health Women's Health Menstruation

As the length of the menstrual cycle varies from one woman to another, it is important to know the personal length to calculate the next period, which can be ascertained by counting and recording the number of days for a... More »

www.reference.com Health Women's Health Menstruation

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 KidsHealth, some girls get cramps during their menstrual cycles due to chemicals in their bodies known as prostaglandins. These chemicals cause the muscles of the uterus to contract and cause painful cramps. More »

www.reference.com Health Women's Health Menstruation