As you get older, your cycle will probably settle into a recognizable pattern. Sometimes, irregular periods can be caused by some medicines, exercising too much , having a very low or high body weight, or not eating enough calories. Hormone imbalances can also cause irregular periods.
For example, thyroid hormone levels that are too low or too high can cause problems with periods. Some girls have extra androgen, a hormone that can cause hair growth on the face, chin, chest, and abdomen. Extra androgen can also makes girls gain weight and have irregular periods. Talk to your doctor if you have had sex and have missed a period because you could be pregnant. Also let the doctor know if:.
The doctor may prescribe hormone pills or other medicines, or recommend lifestyle changes that can help you to have regular periods. Reviewed by: Robyn R. Miller, MD. Larger text size Large text size Regular text size. What Are Irregular Periods? Irregular periods are very common, especially in a girl's first few years of getting her period. What Are Regular Periods? These may include: back cramps or stiffness heavier breasts or breast soreness headaches acne breakouts disturbed sleep patterns mood swings bloating loose stools How Can I Be Prepared?
Girls who are pregnant also will not get their periods. Also let the doctor know if: You were having regular periods that then become irregular. Irregular periods aren't always a sign of a problem, but sometimes it's a good idea to see a doctor about them just in case.
You have irregular periods if the length of your menstrual cycle the gap between your periods starting keeps changing. The average menstrual cycle lasts 28 days, although it's normal for it to be a bit shorter or longer than this. After puberty, many women develop a regular cycle with a similar length of time between periods. But it's not uncommon for it to vary by a few days each time.
There are many possible causes of irregular periods. Sometimes they may just be normal for you. You don't need to get medical advice if you have always had slightly irregular periods or you're still going through puberty.
We break down what you should know about how to identify irregular periods, what causes them and when to see a doctor.
During a normal menstrual cycle, an egg is released from one of your ovaries during ovulation. If the egg is not fertilized by a sperm, then changing hormone levels send your body a signal to shed the blood and tissues that line your uterus.
But some women have what is called abnormal uterine bleeding — another term for irregular periods — which can happen for a variety of reasons, from stress and lifestyle factors, to more serious underlying medical conditions. An irregular period is when the length of your menstrual cycle unexpectedly falls outside of your regular range. Irregular periods can include abnormal uterine bleeding, such as:.
After puberty, many women have a regular menstrual cycle. However, it's normal for the cycle to vary by a few days each time. According to the American Academy of Family Physicians AAFP , between nine and 14 percent of women have irregular periods between their first period and menopause. There are a number of reasons why you may have an irregular, missed or late period, ranging from stress to more serious medical conditions.
Also, when you first begin menstruating, it may take some time time before your period becomes regular.
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