Irregular periods

Irregular periods means a variation in the length of time between your periods from one month to the next that's more than a few days.

Summary

While a small difference is quite normal for most women, it could be a sign that you have a health issue or medical condition that can be treated.

Causes of irregular periods

On average, periods happen every 28 days and last for about five days. However, it's common for the time between periods to be longer or shorter than this or to last longer than seven days. You shouldn’t worry if:

  • You're still going through puberty
  • You've always had slightly irregular periods of a few days

You'll probably have irregular periods if:

  • The variation in time between periods is seven days or more
  • The length of time between your periods keeps changing

Talk to your doctor if you’re concerned about symptoms

Book an appointment with a Spire GP today.

Book an appointment

Conditions related to irregular periods

There are many reasons for irregular periods, these include:

  • Being overweight
  • Eating disorders, such as anorexia
  • Being stressed
  • Going through puberty
  • Pregnancy - you can still experience bleeding in early pregnancy
  • The contraceptive pill or intrauterine system (IUS)
  • Starting the menopause

Irregular periods could also be a sign of an underlying medical conditions such as:

Getting a diagnosis for irregular periods

Keep a note of when your periods start, then count the days between them, to see if this varies.

While irregular periods aren't always a sign of a medical problem, it's a good idea to visit your GP to rule out or identify possible health issues, especially if:

  • You're under 45 and your periods suddenly become irregular
  • You have irregular periods and are finding it hard to get pregnant

Also, tell your GP if you have heavy irregular periods, are bleeding between periods or have symptoms such as pain or discomfort.

In order to make a diagnosis, your GP may:

  • Measure your blood pressure and weight
  • Arrange a blood test to check your hormone levels
  • Assess your stress level
  • Ask if you might be pregnant
  • Perform an internal examination
  • Send you for an ultrasound scan of your womb (uterus)

You may be referred to a gynaecologist if your doctor feels you need further tests or specialist treatment.

Treatments for irregular periods

Treatment of irregular periods depends on the underlying cause of the problem. For example, you may be offered:

  • Hormone therapy, such as the contraceptive pill or hormone replacement therapy
  • Thyroid treatments

Getting pregnant can be difficult for some women with irregular periods, but hormone or fertility treatments can help.

Get in touch

110871
True
general

Marketing Information

Spire would like to provide you with marketing information about products and services offered by Spire and by selected third-party partners. If you do not consent for us to process your personal data for marketing activities, we will still be able to contact you about your enquiry.

We may contact you by email, SMS or phone about your enquiry. If we try to contact you by phone (mobile and/or landline) and you are not available, we may leave you a voicemail message. We may also use your details to contact you about patient surveys we use for improving our service or monitoring outcomes, which are not a form of marketing.