Re: Is this normal?
That stuff about it being one year after your breasts develop or your cup size indictating how close you are is complete b*llocks.
You have nothing to worry about. You are only 13. There is not set/certain age that you begin your period. It just happens sometime within puberty.
~ The journey of a thousand miles begins with a single step ~
* Nothing in the world has ever been accomplished without passion *