Biologically speaking the lining of the womb which would be where the egg implants is shed and you bleed for a few days.
Practically speaking sometimes random aches and pains before hand: tummy, stomach, bottom. Frequently aches during. Sometimes emotional changes (I cry at everything nowadays but when I was younger I just got angry during) and food cravings.
a girl 17 hasn't had a period what is wrong
Nothing happens seven years after a girl has her period. There's nothing specific about this length of time.
if you mean when a girl has her period, this happens once a month once the girl reaches puberty.
Nothing.
it gets hooplaw and i get hungry
No. Hormones determine when that happens.
That would be termed "Statutory Rape".
Yes, it is called a period and happens monthly.
she gets it at the beach and well she is stuffed from a person
Nothing will happen. It is just the same as if she wasn't on her period. Her finger will get very messy.
Then she would put a pad on and continue with her day.
When you first start your period you might have a little discomfort but it only lasts a couple of days with some bleeding of course.