There is a believe that if you begin your period at a very young age, that means you will get to menopause at an early age. That believe is so wrong , menopause is not determine by how early or late your period started.
Menopause is a natural biological occurrence in every woman it marks the end of your menstrual cycle however, some people do get premature menopause.
How to know when you are at your menopause stage;
Weight gain and slowed metabolism
This signs start to come when you are between 40-51 (premature menopause is 40) but the regular age is around 51.
There is absolutely nothing to be afraid of because at the end of the day, every woman will experience menopause.