There are many changes that your body goes through before you start menstruating, such as vaginal discharge, breast development, hair under your arms and in your pubic area and a growth spurt.

Although genetics play a big role in physical maturation, it is not the only factor. Your environment and your health are also players. If you have not started to develop your secondary sex characteristics, such as breast development, hair under your arms and in your pubic area, a whitish vaginal discharge, by the time you are 14 you should see your Doctor. If you are not menstruating by the time you are 16, I advise you seek advice from your Doctor. Otherwise, relax and enjoy this time.

Everyone is different. Periods can start at any time between the ages of about 10 and 16. Only your own body can decide when is the right time for your periods to start.

Since you'll only have a general idea of when you'll have your period, you might want to do some planning. Most girls will use pads for their first period. Your first period will probably be fairly light so Always® Ultra Normal would be a good choice of pad. It's a good idea to keep a pad or two hidden in your bag or school locker . so you won't be caught by surprise when your period arrives.