ANDY'S ANSWER: The average age for someone to get their first period is 13, so you are still a little young. It's possible of course, but not as likely unless your breasts started growing 2 years ago. Normally, a first period will come about 2 years after the first signs of breast budding. The only way to prepare is to make sure that you have a pad available to use when it comes. It wouldn't hurt to have a box on hand at home. Pads are usually individually wrapped, so it's easy to just slip one in your purse or backpack so it's with you at all times.