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. That way, when it happens you won't be caught off guard.