As you start to become an adult, your body goes through lots of changes and you’ll notice that your moods and behaviour change too.
There is no set age for puberty so try not to worry if your body changes earlier or later than your friends’.
For girls, puberty often happens between 10 and 16,1 and for boys between 10 and 18.2 Remember that changes will happen over time.
Everyone’s body is different so some people develop very quickly and others more slowly.
One of the main physical changes of puberty is the growth and development of the sex organs – used to have sex and make babies.
"All my friends wear bras every day but I don't know if I am ready to wear a bra yet.
My mum says 'Your breasts are developing', but they are really small!
I only have two bras so far, and when I wear them I feel like my breasts are fake because they are padded ones.
During puberty your vagina changes and starts to produce a clear or milky liquid called discharge.
It may seem strange at first but it’s a positive sign as it helps to keep your vagina healthy.