It means that her period was a week later than predicted and her flow is heavy. It means nothing more than that, there's no mystery here: it's just a late period, no reason to think otherwise.
when a girl bleeds a little out of her vagina it means she is spotting and probably will start her period soon.
Yes, you can have sex on your period.
she could have her period. you should check the front if not then you should go get it checked out.
Yes, she is.
no
Get a band-aid.
When a girl bleeds after sex it can mean she's not a virgin after that, on her period, or not lubricated enough or something wrong within the girls body. There are many reasons unrelated to virginity.
If a girl has her period it all she is not pregnant. Irregularities in when the girl starts her period are a natural phenomena. the only way to control is, is by using the anticonception pill, but "the girl" has to see her doctor about that.
Around 12 yrs.
usually 6 months or so
She starts her period
Yes, a girl can ovulate a couples of days before her period.