Wondering if that weird cramp or sudden mood swing means something? Googling common questions about first periods in the middle of the night? Typing things like “Am I normal?”’, “What my body’s doing?”, or “How to deal with periods at school?”, you’re not overthinking it. It’s not weird. It’s being smart. You’re tuning in to your body.
Getting a first period can feel like a collision of curiosity, confusion, and maybe a little dread. It’s a rite of passage. But the wild part? Most people go through it without a real explanation.
So, this is for anyone standing on the edge of that experience, unsure what to expect, but knowing it’s coming. This is the honest version. No sugar-coating. No medical jargon. Just real talk. So it feels a little less confusing and a lot more manageable.
Let’s start with the big one.
What age do most girls get their first period?
Most girls get their first period somewhere between 8 and 17, according to the NHS. It’s a big range, and it depends on your body, socioeconomic conditions, genetics, general health, nutritional status, exercise, seasonality, family size and a bunch of other stuff that’s out of your control. If you’re on the early or late end, don’t panic. Your body’s doing its thing on its own timeline.
How do you know it’s coming?
There are a few first period symptoms that show up before the bleeding starts. Your boobs might start growing, you could notice more discharge in your underwear, and you might feel more emotional than usual. These signs usually show up months (sometimes years) before your first period actually starts. Read more about what to expect here.
Now, when the actual thing shows up, here’s how it may happen.
How much do you bleed on your first period?
It’s usually not a horror movie. Most girls bleed pretty lightly at first. It might be brownish instead of red, and it might come and go (more about that here). Some girls bleed more, but it’s not usually a full-on flood. It’s only about 20 to 90ml (about 1 to 5 tablespoons).
Everyone’s different. If your flow feels super heavy or lasts longer than a week, it’s worth checking in with a doctor.
How long does a first period last?
Usually about 2 to 7 days. That first one might be shorter or all over the place. Don’t worry if your cycle isn’t regular right away. It takes a year or two for your body to figure things out. Keep some pads or period panties handy, you’ll thank yourself later.
What if I get my first period at school?
Okay, this is a big one: what to do if you get your first period at school.
First, breathe. This happens all the time. Seriously. Teachers, nurses, and even your friends probably have your back. Keep a pad or liner in your backpack just in case (this First Period Starter Kit could be your go-to) If it catches you off guard, ask a teacher or go to the nurse. You don’t need to explain everything. A simple “Hi, I think I just got my first period” is enough. You’ll probably be given a pad, an (professional) explanation and some privacy.
If you do bleed through your pants or uniform, it’s not the end of the world. Tie a sweatshirt around your waist. Call home if you need to. You’ll survive this.
And you’ll be someone else’s lifesaver one day when it happens to them.
What do first-period cramps feel like?
Kind of like your lower stomach is annoyed at you. First-period cramps can be dull and achy or sharp and crampy. You might feel it in your back or legs too. A heating pad helps (this one is easy and discreet to use). So does moving around a bit, drinking water, and rest. If it’s really bad, talk to an adult, they will have tried and tested methods of cramp relief that will help you.
What’s actually happening in your body?
Here’s the deal: each month, your body preps for a possible pregnancy by building up the lining in your uterus. When there’s no pregnancy, your body sheds that lining. That’s what your period is. Blood, tissue, and discharge leaving your body. Gross? Kind of. Magical? Def.
What products should you use?
Start with pads or period underwear. They’re easy and low-stress. Tampons and menstrual cups are great too, but give yourself time to get used to the idea of periods before you try any invasive period care products. There’s no rush. Pick what makes you feel the most comfortable and confident.
How do you track your period?
You can use a calendar, an app, or a note on your phone. Track when it starts, how long it lasts, and how you feel. This helps you learn your body’s patterns and gives you a heads-up for next time (more on this here).
How do you talk to someone about it?
Pick someone you trust — your mom, sister, older cousin, friend, whoever. You don’t need a speech. Just say, “I think I got my first period.” They’ve been there. They’ll get it.
Can your period affect your mood?
Absolutely. Hormones are shifting, and that can mess with your emotions. You might feel extra sensitive, irritable, or just off. That’s part of the package. Try not to judge yourself for it, you’re not overreacting, your body’s just doing a lot. Eventually you’ll get used this part of your period too and you’ll learn to regulate your swinging moods.
Can you still play sports or swim on your period?
Yes, 100%. Your period doesn’t bench you. If you’re comfortable using a tampon or a menstrual cup, you can swim. Pads are great for everything else. Some girls actually find that moving around eases their cramps.
Your body might feel different, but you’re not broken.
Does everyone have the same experience?
Not even close. Some girls get super regular cycles right away. Others are all over the place for a year or more. Some bleed a little, some a lot. Some get cramps, others barely notice anything. That’s why comparing notes with friends can be helpful but also confusing. Your body’s version is valid.
How do you handle the awkward feelings?
Start by remembering this is one of the most universal human experiences on the planet. If you feel embarrassed, that’s okay. But you won’t have to carry that forever. The more you talk about it, the less weird it gets. And the more you support other girls, the stronger we all are.
Last thing: there’s nothing shameful or gross about having a period. It’s not a weakness. It’s not something to hide. It’s your body being powerful and doing what it was made to do.
So pack your bag with a pad, wear what makes you feel good, and know that you’ve got this. And if you ever feel weird or worried, remember, every woman you admire has been exactly where you are right now. Confused, crampy, and figuring it out one cycle at a time.
You’re in good company.
