Pregnancy: get a pregnancy test.
Stress, running, working out, etc....
Menstruation occur at the age of 9 to 16 years old
because puberty starts at the age of menstruation, that is the age at which the body is developed enough to begin with the job of reproduction.
There is no set age for a woman's menstruation to begin or end.
the age? any time 8-16
Yes. When a woman goes through menopause, her menstruation will end. The average age for menopause is in the early 50's.
menopausal
18
It is 12.
Secondary amenorrhea occurs in women of childbearing age after a period of normal menstruation and is diagnosed when menstruation has stopped for three months. It can occur in women of any age.
The average age would be thirteen however menstruation is different for every female.
It's different for everyone, but it usually stops after menopause.
In females, menstruation can commence at any time between the age of 9 and 15. After menstruation commences, a girl will usually carry on growing until she is about 19 years old.