Arrives and leaves abruptly.
The first year after menarche menstrual cycle is very irregular. Sometimes the girl menstruates once and then only after another five months. It start to regularize after 12 months.
“After the first 12 months, the cycle is regular every month and will arrive unless there is an illness, pregnancy or a condition that prevents it”, refers Valenzuela Tortolero.
When you are pregnant, the period is lost and returns after delivery. However, a number of postpartum women believe that breastfeeding will protect against a new pregnancy. It does not happen, because the milk is not a contraceptive and although it seems that you are menstruating, the blood may still be a part of delivery time and a new pregnancy can be reached.
Upon reaching 48 years on average, the mexican women begin to have abnormal menstruation, because their hormone levels are shrinking.
Menopause is the end of menstruation, the last time of period. And the climacteric is the period preceding menopause, and comprises five to eight years.