Some women have PMS, or premenstrual syndrome . A woman with PMS may have bloating, breast soreness, swelling, fatigue , or irritability for up to two weeks before her period begins. The cause of menstruation is the natural maturation of the female body. A female becomes ready to menstruate as young as 9 or 10 years old. Most will start to menstruate by the time they are fifteen.
Women can have problems if hormones are thrown off balance.
Irregular or missed periods may be caused by stress , changes in weight, diet, or illness. Menstruation does not need to be prevented. If a woman has her uterus removed for any of several medical reasons, she will no longer have a period. A female knows that she has started menstruation when she begins to bleed. It is not necessary to see a healthcare provider for diagnosis.