ANDY'S ANSWER: Ah... the burning question that everyone wants to know... When will I get my period? The short answer is that there is no definitive way that anyone can predict when your period will start. Most of the time, girls will get their first period about 2 - 2 1/2 years after they notice the first signs of puberty. In females, the first signs of puberty are that you start getting public hair and your breasts will start to develop.