Most women have a period every month or every 28 days. Some women have their period every 26 days and other women have their period at longer intervals, up to every 34 days. What is important is that the period is regular and that it starts every month around the same time and within 5 days of the last time. Women with a regular monthly period will have 13 cycles each year of her reproductive life. A woman with regular periods could have up to 450 periods in her lifetime.
Women can stop their period naturally because of pregnancy.
Women do not have periods during pregnancy. If a woman then breast feeds her baby exclusively, gives the baby no bottle or pacifier, the frequent suckling will make the woman s period stop for at least 3 to 6 months. Menopause happens in half of women by age 50. Menopause is when a woman has not had a period for 1 year and tests can prove the ovaries are no longer making the female hormones and are not able to produce an egg for reproduction. Only women capable of a menstrual cycle can get pregnant naturally.