There really isn't any official way. I'm sorry :p
I guess the white vaginal discharge or tender breasts.
Tell them you got your period for the first time. Simple as that (y) It happens to every girl and is as normal as getting sick or whatever
No pregnancy test will tell you that early. Some will tell you 5 days before you are supposed to get your period, but most won't tell you until the time when you are supposed to be getting your period. There are no "symptoms" this early.
One of the most obvious ways to tell if you are going to get your period soon is after you have been having discharge for 6-12 months
Talk to your Mom.
well when you notice you start getting really bad cramps a lot and you start spotting is really when you first start thinking that you might be getting your period and if u get a check up from the doctor about it and she? she can tell you when they think you might get it soon nobody can tell when there menstruation will come even the doctors can't
You will start to feel cramps and naseau
Talk to people you trust like your parents and some friends. Its better to tell someone. And also tell them directions before you do the cycle.
Well,with some people,if you haven't had your first period yet,it could be a sign of it coming on.also,others signs of you getting ready to start a first period is the breasts getting bigger.
I just had my first period yesterday and i when my mom went to the shop i just left a note in her wallet to tell her to buy tampoons and she figured it out. you can also send her a text or just tell her.
There's blood in your underwear.
yes
You can tell if you have discharge and cramps. Your period will start two to six months after you have discharge.