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. Your period may become irregular up to eight years before menopause.
A gynecologist will be able to determine the cause of your irregular periods and help you develop the best treatment plan for you. Follow Penn Medicine for Women. November 02, Topics: Gynecology. A girl's monthly cycle is the number of days from the start of her period to the start of the next time she gets her period. You often hear this is a day cycle. But 28 is just an average figure that doctors use.
Cycle lengths vary — some are 24 days, some are 34 days. And a girl may notice that her cycles are different lengths each month — especially for the few years after she first starts getting her period. Early in a girl's cycle, her ovaries start preparing one egg. At the same time, the lining of the uterus becomes thick to prepare a nesting place for a fertilized egg in the event that the girl becomes pregnant. About 2 weeks before a girl gets her period, the egg is released from the ovary this is called ovulation.
The egg travels through the fallopian tube into the uterus. If the egg isn't fertilized by sperm, it starts to fall apart. Then the lining and egg leave a girl's body as her period and the whole thing starts all over again — that's why we use the word "cycle. A girl's body may not follow an exact schedule. It's common, especially in the first 2 years after a girl starts getting her period, to skip periods or to have irregular periods.
To find out what's normal for you, start keeping a record of your menstrual cycle on a calendar. Begin by tracking your start date every month for several months in a row to identify the regularity of your periods. For some women, use of birth control pills can help regulate menstrual cycles.
Treatment for any underlying problems, such as an eating disorder, also might help. However, some menstrual irregularities can't be prevented. There is a problem with information submitted for this request. Sign up for free, and stay up-to-date on research advancements, health tips and current health topics, like COVID, plus expert advice on managing your health. Error Email field is required.
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Your periods may come early or late. Causes of irregular periods There are many possible causes of irregular periods. Common causes include: puberty — your periods might be irregular for the first year or two the start of the menopause usually between the ages of 45 and 55 early pregnancy — take a pregnancy test to rule this out some types of hormonal contraception — such as the contraceptive pill or intrauterine system IUS extreme weight loss or weight gain, excessive exercise or stress medical conditions — such as polycystic ovary syndrome PCOS or a problem with your thyroid When to see a GP You don't need to get medical advice if you have always had slightly irregular periods or you're still going through puberty.
But see a GP if: your periods suddenly become irregular and you're under 45 you have periods more often than every 21 days or less often than every 35 days your periods last longer than 7 days there's a big difference at least 20 days between your shortest and longest menstrual cycle you have irregular periods and you're struggling to get pregnant There might not be anything wrong, but it's a good idea to get checked out to see what the cause might be.
Trying for a baby It can be more difficult to get pregnant if you have irregular periods because you might not ovulate release an egg regularly. More about periods and other period problems Read more about: periods and the menstrual cycle heavy periods stopped or missed periods period pain Video: menstrual cycle This animation explains in detail how the menstrual cycle works.
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