How repeatedly should i hold my length?

im 12 i had my length 16 days ago and i have it again most
is that ordinary Average cycles can last 24 to 35 days. You are still young-looking, so period can be crazy at that age, and totally irregular. It is normal, but if your cycles don't start durable longer, at least 20 days respectively after about a year, afterwards you should ask a doctor.
when your period is a short time ago beginning, it may be unbelievably unpredictable for about a year, and next it should start to be more common, and regular, but copious women have unregulated period no matter how heaps years they have have it...but it is normal :)