I’m 9 years old and I got a period. People are surprised and I don’t know why

It's totally okay that you got your period at 9! Everyone is different, and while some people start a bit later, it's not unusual for girls to get their first period around your age. It's probably surprising to some people just because they expect it to happen closer to 11 or 12, but there's a pretty wide range of normal.

Think about it like growing taller – some kids hit a growth spurt super early, and some later. Your body is just doing its thing on its own schedule, and that's perfectly fine. Puberty starts when it starts, and for some, that means getting their period a little earlier than others.

The main thing is that your body is changing and growing, and getting your period is a sign that you're going through puberty. It's totally normal, and your body knows what it's doing. You can log how your cycle goes in the Soso app, which is made for exactly this kind of thing, so you can see your patterns and what's normal for your body.