No one can tell you exactly when you will get your first period, because everyone is different, but this quiz will help you get an idea of when it might happen by using the five tanner stages.
Flat
Only breast buds
Breast tissue beginning to develop
Breast tissue continueing to develop, aeorla seprate mound
Fully Developed
A few fine, light hairs
More hairs, darkening in colour
More hairs, dark, beginning to become wirey
More hairs, dark, coarse, wirey, beginning to be in the triangle shape
More hairs, dark, coarse, wirey, from thigh to thigh
No
5-10 lbs.
10-15
15-20
1 inch
2 inches
3-4 inches
5 + inches
I haven't grown this year.
I'm not in, and haven't had my puberty growth spurt.
I'm in my puberty growth spurt.
I've finished my puberty growth spurt.
No
Yes, light, 0-6 months
Yes, heavier, 6-18 months
Yes, extremly heavy, 18 + months
8 or under
9
10-11
12-13
14-15
16 +
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Here's an interesting quiz for you.