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Irregular periods aren't always a sign of a problem, but speak with a health care provider about your condition.
What are irregular periods?
If the length of your cycle keeps changing, you may have an irregular period.
What causes irregular periods?
There are many potential causes of irregular periods.
Common causes include:
Puberty
During the first year or two of getting your period, it may be irregular.
Menopause
When you start menopause (usually between the ages of 45 and 55), your period may become irregular.
Pregnancy
Your period may be irregular because you are pregnant. Take a pregnancy test to rule this out.
Hormonal contraception
Some types of contraception, like birth control and intrauterine devices (IUDs), contain hormones that could make your period irregular.
Fluctuation of weight
Extreme weight loss or gain can affect your period.
Excessive exercise
Engaging in intense or prolonged physical activity can disrupt your hormonal balance and affect your period.
Excessive stress
Mental and emotional stress release hormones like cortisol, which can interfere with the normal function of reproductive hormones.
Medical conditions
Conditions like polycystic ovary syndrome (PCOS) or a problem with your thyroid could cause issues with your period.
When to see a health care provider
Seek a health care provider if:
- Periods suddenly become irregular and you're under the age of 45
- Periods occur less than every 21 days or more than every 35 days
- Last longer than seven days
- There's a significant difference of at least 20 days between your shortest and longest menstrual cycle
- You have irregular periods and are having difficulties getting pregnant
While there might not be a problem, it's beneficial to get checked by a health care provider to determine the cause of your irregular periods. A referral to a specialist or gynecologist could be required for further tests or treatment.
Trying to get pregnant
Getting pregnant could be more difficult with irregular periods because you might not ovulate regularly.
Read more about periods and pregnancy.
Hormone medications or fertility treatments may be required if you're struggling to get pregnant.