What causes two periods in one month?
It is not uncommon for women to experience menstrual cycles that are irregular or even non-existent. However, it is rare for them to have two periods in one month. There are several possible reasons why this might happen:
1) You may have polycystic ovary syndrome (PCOS).
PCOS is a hormonal disorder that affects approximately 1% of women. Women with PCOS often develop irregular or absent periods due to excess male hormones in their bodies. These excess hormones cause the body to produce too much estrogen and/or progesterone which interferes with normal menstrual cycle regulation.
2) Your period could be irregular because you’re experiencing menopause, which means your body no longer produces enough estrogens and progesterone to maintain a regular menstrual cycle.
Menopause occurs when the production of these hormones stops completely. If you’re over 35 years old, you’re most likely experiencing menopause.
3) Another possibility is that your body is producing too little estrogen and progesterone.
Estrogen deficiency can occur if you’ve had certain types of cancer treatments such as chemotherapy or radiation therapy. Other conditions that can lead to low levels of estrogen include pregnancy, childbirth, or taking birth control pills for long periods of time.
4) You may be ovulating late.
In this case, you’ve developed what is known as a luteal phase defect. The luteal phase is the time that begins with the fall of your progesterone level after ovulation. Normally a woman’s luteal phase is between 10 and 16 days long, depending on how quickly her body produces progesterone. If the luteal phase is shorter than 10 days, there can be menstrual cycle disturbances.
You may have a second period before you are done shedding the uterine lining built up from the first ovulation.
5) Another possibility is that even though you experience bleeding in the middle of your menstrual cycle, you’re still ovulating.
This is called anovulatory bleeding. It can result in abnormal periods that are heavy or light.
6) If you’re taking birth-control pills that contain the hormones estrogen and progesterone, they may be altering your natural menstrual cycle.
While this is the desired effect of these pills, it may cause bleeding at unexpected times during the month.
7) Other medications can affect your normal monthly bleeding.
This is a less common cause of two periods in one month, but it does happen. These drugs include those that treat high blood pressure, such as Clonidine.
8) Rarely a non cancerous growth in the uterus or in the cervix can cause a woman to have periods at unexpected times.
9) Another possibility is that you may have what is called vascular leiomyomas.
These are benign growths that develop in the walls of the uterus. They cause abnormal bleeding and pain, but they do not increase your risk for uterine cancer.
A good way to tell if you have an illness that is causing your periods to be abnormal is to keep a calendar of your periods and vaginal bleeding. Write down the first day of your period for three months in a row. Then see your doctor to get medical help if your periods are more than seven days late or if you have heavy bleeding or pain that doesn’t go away.
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