I thought this might help with the af thing
from here http://kidshealth.org/kid/talk/qa/when_period.htmlHTML Code:No one can say exactly when you'll get your first menstrual period, but you will get it sometime during puberty. Puberty is the time in your life when you begin to become an adult. This means a lot of growing and changing — both inside and out. Some girls start puberty at age 8, and others may start as late as 13 or 14. Each girl goes at her own pace. So don't think you're weird if you start puberty a little earlier or a little later than your friends. At the beginning of puberty, you'll notice that your breasts are developing and hair will start to grow on your genitals (pubic hair). A little later, hair also will grow under your arms. For most girls, their first menstrual period, or menarche (say: meh-nar-kee), begins about 2 to 2½ years after breast development starts. Some girls may get their period in less than 2 years. For other girls, it may take longer. Every girl is different, and there is a wide range of normal development during puberty. A good sign you're getting close to the time when your first period will arrive is if you notice a thick, white mucous discharge coming from your vagina. Usually, this happens about 6 months before you get your first period.