TLDR: Everything you might not know about periods
A typical cycle is between 21–35 days, counted from the first day of your last period. In the first couple of years, it’s normal for cycles to be irregular while hormones settle.
Yes - especially in the first two years after starting. If your periods are still very irregular after that, or you miss three in a row, speak to a doctor.
Brown blood is usually older blood leaving the body more slowly - this is common at the start or end of a period. If it’s persistent, smells strong, or comes with itching, get medical advice.
The average age is around 12, but starting anywhere between 8 and 17 can be normal. If you’re 15 with no period (or 13 with no signs of puberty), check in with a doctor.
Periods are completely normal - but confusion and embarrassment are common too. Talking to someone you trust, keeping spare products handy, and tracking your cycle can help you feel more in control.
Lots of people have periods (around 1.8 billion people every month according to UNICEF!) but that doesn’t automatically mean everyone understands them.
In fact, many young people still feel confused, worried, or embarrassed about what’s normal.
If you’ve ever Googled a question late at night or compared yourself to friends and wondered “is my body okay?” then you’re definitely not alone.
We’ve teamed up with teen app luna to answer the essential questions.
When is my next period?
Everyone's cycle is different, and it's normal for periods to be quite irregular within the first couple of years of starting.
But, in general, a healthy menstrual cycle can be from 21 to 35 days.
A new cycle begins on the first day of each new period.
Do keep in mind though that it's completely normal for periods to be irregular or delayed when you first start out, but over time your cycle should settle into a regular pattern.
Is it normal for my period to be irregular?
So the truth is periods do not regulate immediately and it's very common for teenagers to not have a regular period.
When we start having periods for the first time, our hormones are still balancing.
In each cycle, our hormones rise and fall which leads to the release of an egg from our ovaries, the growth of the uterus lining and finally the shedding of the same lining which is why we bleed.
It can take an average of 2 years before our periods become regular simply because in puberty our hormones are regulating.
If your periods remain irregular 2 years after starting periods, or you miss 3 periods in a row, it's best to check with a doctor.
Why is my period/discharge brown?
Brown discharge is usually normal around your period and it's caused by a slower flow of blood from the vagina.
If you're new to periods, it could be that your period is just a bit irregular and you're starting it a bit earlier than expected.
If you haven't started periods yet, it could be your first period starting.
However, if you’re not on your period and you notice brown discharge happening a lot, it’s recommended that you check it out at the doctors.
It might be nothing to worry about, but it’s best to rule anything out.
If you're not sure whether this is cause for concern, there's some other symptoms to look out for, like...
- very smelly discharge
- itchiness around your vagina
If you experience any of the symptoms listed above, luna recommends going to see your doctor to get some personalised advice and treatment.
I'm 11, why have all my friends started their period and I haven't?
Please don’t stress. The average age to start a period is 12 years old, but it does vary from person to person.
The normal age range to get your first period is between 8 and 17, or 2 years after your first signs of puberty like new body hair growth and breast development.
If you turn 15 and haven't got your period yet, or 13 without any signs of puberty, you can check in with your doctor.
Otherwise try not to compare your journey to others’ – it will come when your body is ready.
What do I do if I get my period in school?
Starting your period at school can feel a bit overwhelming, but don't worry, you're not alone!
Here are some steps you can take to manage it smoothly:
- First, take a deep breath – it's totally normal and happens to lots of people!
- If you're worried about leaks, tying a jumper around your waist before you get up can help you feel more secure
- Excuse yourself to the bathroom
- If you have period products in your bag, great – if not, ask a friend or visit the school nurse, or in the short term make a temporary pad by rolling up some toilet paper
It's a good idea to make up a little emergency kit of period supplies to keep in your bag so you're always prepared.
How do I tell a parent I've started?
You don’t need a big speech or a dramatic moment. Just choose the style that feels most comfortable to you.
You may want to say it simply with a quick sentence:
- “I think my period just started”
- “Can we talk about something? I think it’s my first period”
- “It's time for us to pick up some pads if you get what I mean”
Short and to the point is still totally valid.
You could also text them if you feel nervous about telling them face-to-face.
How to make periods feel less embarrassing
Nearly half of teens (47%) told luna they’re only comfortable talking about periods with close friends or family, while 1 in 3 say they feel embarrassed or prefer to keep it private.
That embarrassment can cause practical struggles.
When teens feel embarrassed to talk about their periods, it can hold them back from asking for extra support to manage everyday activities – whether that’s avoiding sports rather than feeling okay to join in with a bit less energy, feeling anxious about going school because of potential leaks, or cancelling plans altogether due to a low mood.
Feeling embarrassed to talk about and advocate for themselves during periods doesn’t just shape how teens think about their periods; it shapes how they experience them on a practical level!
What can help:
- Remember that periods are normal and nothing to feel ashamed about – it’s okay to ask for support or sympathy when you need it.
- Open up conversations about this with trusted adults or friends – the more we talk about it the easier it gets!
- Keep spare products handy for reassurance and peace of mind.
- Keep in mind that everyone’s cycle is different so it’s important to get to know your normal by tracking – not using friends/family as guide to what’s normal.
- Focus on self-compassion – periods can affect our confidence and self-esteem especially when we’re new to them and still figuring out what works, so focusing on self-care is important during this time.
- Explore reliable sources for further support and information, especially if talking about it openly is a struggle – the luna app is a helpful option here.
The bottom line
Periods are normal, but confusion about them is normal too.
You’re not weird if:
- yours don’t match your friends’
- you feel embarrassed
- you still have questions
Understanding your body takes time, and everyone learns at their own pace.
And if something doesn’t feel right, it’s okay to ask!
luna can support you on this journey with a built-in period and mood tracker, articles and videos about this, plus a space to ask and read anonymous questions – and you can find out more here.
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