If you haven't got your menstruation at 17-18 you should go see a doctor. Up til then it's normal.
It could be irregular menstruation. If you are the one having late menstruation, I might suggest for you to go the doctor and ask more information about late menstruation. But yes, one option is irregular menstruation.
no.
They are already fertile when you're born, but not released until menstruation!
I had it late and prolongued...
Doesn't have to mean anything, The menstruation does that sometimes.If you've had unprotected sex you might wanna take a pregnancy test.
Menstruation comes periodically. That is why it is called as period.
Semen can't really effect menstruation, this is because menstruation is controlled by the hormones in a woman's body - the only time semen can effect menstruation is if it results in pregnancy. Semen can however soften the cervix which can help induce a late period.
Menstruation typically begins in either late Tanner stage II or early Tanner stage III of puberty.
Pregnancy Body response Body system
It's too late for contraception if your period is already late.
SQUEEZE IT OUT!!
If you have normal menstruation you cannot be pregnant.