At first , women acquire reproductive age. This is about 10-12 years. This is followed by puberty. At this stage, growth of pubic hairs, hormonal changes etc. occurs. Then menarche(the first menstruation) happens. From both social and medical perspectives, me narche is often considered the central event of female puberty, as it signals the possibility of fertility. So menarche is followed by puberty. Then menstruation occurs once in every month, which is called the menstrual cycle and at last, the last menstruation occurs, which is called the menopause.
Reproductive age following puberty is not common. When girls reach the age of about 10-11, a surge of reproductive hormones are secreted by the brain, activating the reproductive system to prepare it for adult function. This surge is generally referred to as the onset of puberty and leads to the beginning of adult sexual life. however, rear cases can occur due Imbalance in the hormone production, either due to genetic problems or by the lifestyle.