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Friends discussing periods using resource found on phone

When do periods start?

WHEN DO PERIODS START?

 

puberty

The average age for periods to start is 12 (during puberty) but for some girls they will begin earlier and others later, everyone is different.

first period 2-3 years

Most girls get their first period 2-3 years after their breasts begin to grow. You may notice changes to your nipples and breasts such as small bumps around your nipples becoming rasied and the darker area of your nipples starting to get bigger and puffing out, these are often referred to as 'breast buds'.

breast buds

After 'breast buds' have developed you may notice the first strands of pubic hair sprouting. Over time the hair will become curlier and thicker and spread towards your thighs.

biological mother

If you are comfortable and able to do so, it may be worth discussing with your biological mother when she had her first period to help you estimate when you are likely to start.

SIGNS YOUR FIRST PERIOD COULD BE ON IT'S WAY

As you approach your first period you may notice some of the following symptoms:

vaginal discharge

Watery white/yellowish vaginal discharge

stomach cramps

Lower abdominal/stomach cramps

Acne

Acne

Bloating

Bloating

Mood swings

Mood swings

Tiredness

Tiredness (fatigue)

Breast tenderness

Breast tenderness/soreness

MY PERIOD HAS STARTED, WHAT NOW?

 

Adolescent wondering what to do next now that her period has started

When periods begin it is a good time to consider if you need contraception and if so what option is right for you.

 

Healthcare professionals such as doctors, nurses and pharmacists will be able to support you when making the decision and if you are under the age of 16, they will not tell your parents or carer, as long as they believe you fully understand the information you are given and the choices you’re making. If you are comfortable and able to do so you you can include your parents or carer in the discussion.

 

You may decide to track your period in an app, calendar or diary to better help you manage your period.

I HAVEN'T HAD MY FIRST PERIOD, SHOULD I BE WORRIED?

If your period has not arrived by the age of 16 it may be worthwhile booking an appointment with your doctor, normally a delay in starting your periods isn't something to worry about, it is likely that they will be able to help identify why your period is delayed and discuss treatment options if required.

Adolescent concerned with first period having not arrived

Did you know?

Between the ages of 16-18 periods tend to become regular, prior to that they may not occur monthly.

Sporty women celebrating uninhibited by their periods

THE MESSY AND THE PAINFUL, BEING PREPARED AND TAKING CONTROL

Period tracker, check! Period products, check!... Discover some useful tips around managing your period.

 

Learn more

PP-UN-WHC-GB-0043 September 2023

Disclaimer

The health information on this site has been reviewed and approved by Bayer by an appropriately qualified medical reviewer. It is intended as general information only. It is not intended to replace a consultation with a healthcare professional, to provide specific medical advice or replace the patient information leaflet provided with your medicine. Treatments discussed here should be initiated under medical supervision. For full information including side effects and eligibility for treatment, please consult your healthcare professional. Always speak to your doctor or nurse for personal medical advice.

 

Images on this site are stock images and for illustrative purposes only.

 

Reporting side effects

If you get any side effects whilst taking a medicine, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. You can also report side effects directly via the yellow card scheme at www.mhra.gov.uk/yellowcard. By reporting side effects, you can help provide more information on the safety of medicines.