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 periods are consistently closer than that, the abnormal bleeding is called metrorrhagia and can be a cause for concern. Possible reasons for an extra period include hormonal changes or dysfunctional uterine bleeding.Know More
Dysfunctional uterine bleeding is the most common cause of bleeding at abnormal times between periods in women of childbearing age, according to eMedicineHealth. In most cases, it does not indicate disease, and can occur both with and without the release of an egg from the ovaries.
In some cases, abnormal bleeding outside of the normal menstrual cycle can indicate uterine fibroids or pelvic inflammatory disease, according to eMedicineHealth. If two periods monthly continue to occur, visit a doctor for an evaluation and pelvic examination to rule out these conditions. In older women, irregular periods can be an early indication of the beginning of menopause. Any time that irregular bleeding is accompanied by severe abdominal pain, lightheadedness or a fever, it is important to seek medical attention as soon as possible.Learn more about Menstruation
According to National Health Service in the United Kingdom, light periods or spotting for seven days can occur in women for a variety of reasons, including pregnancy and weight loss. Light periods are also common in women who have recently started taking birth control pills.Full Answer >
Spotting, or breakthrough bleeding, in between periods is common, and many women experience it at some point in their lives, according to WebMD. Some light bleeding in between periods is usually not serious, though unusual amounts of bleeding at an atypical time during the menstrual cycle can indicate a medical problem, particularly if a woman might be pregnant. Any significant bleeding during pregnancy can signal a serious problem.Full Answer >
Dark brown blood between periods is almost always harmless and can be a result of ovulation, blood leftover from a period, pregnancy or stress. What to Expect suggests keeping a journal to track a period and any additional bleeding between periods in order to help determine the cause of any unexpected bleeding.Full Answer >
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, according to U by Kotex. However, if a woman's cycle is 30 days or longer, any added stress or change in daily life can cause this disturbance.Full Answer >