So you’re waiting, but nothing’s happening. When is it going to hit? You know, puberty? When does puberty start? Puberty can start when you're 8 or not until you're 13, but it usually starts when you're around 11.
Here are some clues that will help determine when you will start your periods and begin puberty:
The process can take anywhere between 1½–4 years. Starting puberty earlier than 8 or later than 13 should be discussed with you doctor. Generally, girls can expect their first period about 2 years after the first signs of breast development but note that process can vary depending to an extent on when you start it.