You can't, and shouldn't try. You'll just have to wait until your body is ready for it.
IF you think you're really running late, talk to a doctor.
You can start conceiving from your first period.
Your period will start within 7 days
You can start them whenever, but it is a possibility that your period will be delayed.
you start your period when you are 8-16 year old... BE PREPARED!!
If you are just beginning your period it is possible that this is the first signs of your period to start in a few days. I would suggest you carry supplies with you when away from home or put on a panty liner.
Some people think that the home substances like green tea can make a woman have her first period. Some think it is not true.
It is perfectly normal to start your period weeks early and its dark brown. You mostly start with dark brown when you start your period and it turns red.
Your cycle is from the start of your period to the start of your period. (have alook it the lik below)
A sugar pill is what women take to start their period. It allows the period to start.
If you have never had your period before, than your period will start when your body is ready. That is proberly why some of yoour school mates (assumed) start at different times.
You start counting on the first day of your period.
Your body decides when you start your period nothing else. Hormones determine when this will happen.