A first period usually arrives at around age 12, about 2 to 3 years after breasts start to grow, so there's normally time to prepare. If you worry about it starting at school when you're not there, preparing is exactly what helps. She'll know what to do and who to go to.
When will it start, and what are the signs?
Anywhere from 8 to 17 is usual, so starting earlier or later than her friends is common. The main clues: her breasts have been growing for 2 to 3 years, and hair has appeared under her arms and around her genitals. About 6 to 12 months before, a whitish discharge a bit like mucus usually shows up on her underwear.
How do I talk so she listens?
You don't need one big talk. Lots of short chats in passing work better: in the car, by the pads in the supermarket, after a TikTok video. Start by asking what she already knows, and answer simply and plainly.
Use the real words: period, vagina, pad. If periods are talked about calmly at home, it's easier for her to tell a teacher or doctor when something hurts. And if you remember your own first period, tell her about it.
Boys in the family should know what periods are too, which means fewer jokes at home. Her own period, though, is hers to share, so only pass it on with her permission.
What can we get ready?
Pack a small kit with her: a couple of pads, spare underwear, wipes and a bag. Let it sit in her school bag, like an umbrella, just in case. Show her how to stick a pad in and throw it away. It needs changing every 4 to 8 hours, or sooner if full.
Agree on a signal: a message that means you'll come, or at least reply. Tell her the trick of tying a jumper round her waist if she leaks. And say out loud that anyone can leak, and nobody will be cross with her for it.
Common questions
What if she doesn't want to talk to me?
Don't push: leave the kit in the bathroom and say, "Ask me anything, any time, even by text." Offer a book, a video or a chat with another adult she trusts. Better that her answers come from somewhere reliable, since she'll hear plenty of rumours from friends anyway.
I'm her dad. Should I talk about this too?
Yes, and the same rules apply: a calm tone and practical detail. Ask which pads she likes and take a photo of the pack, so you can buy them without questions. If she'd rather talk to a woman, suggest an aunt, grandma or school nurse, but make it clear you're there too.
Is it true you can't get pregnant before your first period?
Not true. The first ovulation (when an egg is released) can happen before the first period, so pregnancy is possible even before then. Mention this alongside the talk about periods and contraception.
Where do we start: pads or tampons?
Pads are easiest for the very first periods, because tampons and cups take some getting used to. All of them are safe from the start, and a tampon doesn't affect virginity. Let her try whatever she likes when she feels ready.
In short
- Lots of short chats instead of one big talk
- Pack a kit together: pads, underwear, a bag
- Agree on a signal that means you'll reply or come
Source: NHS: Starting your periods
Educational content; it does not replace professional medical advice.