Menstrual cycle is a series of changes in a woman's body to prepare for pregnancy. But that does not mean if you are not menstruating or menstruation is late, a woman is definitely pregnant. Late menstruation can also be caused by other things, such as stress, smoking, certain diseases, to the side effects of hormonal contraception. Each woman's menstrual cycle is different. The normal length of the menstrual cycle is 21-35 days, calculated from the first day of menstruation this month, until the first day of the next menstruation. Menstrual cycles are usually the same every month, but there are also times when menstruation comes late. Various Causes of Late Menstruation If the "menstruation period" is back from normal time, it could be due to one of the following reasons, namely: Stress When stress, hormones and the part of the brain responsible for regulating the menstrual cycle, namely the hypothalamus, will be disrupted. In addition, weight can go up or d