17-year-old girl menstruation is always delayed may be the hypothalamus – pituitary – ovary axis development immaturity, pregnancy, irregular life and other reasons.
17-year-old girl is just have menarche soon, hypothalamus – pituitary – ovary axis development is not mature, there may be menstrual cycle disorders, temporary menstruation is always delayed phenomenon, need a period of time to regulate.
17-year-old girl has had sex, menstruation is always delayed not to consider is also pregnant, pregnant body estrogen and progesterone levels increase, the endometrium will not occur temporarily cycle peeling, menstruation will be delayed not to.
17-year-old girls usually live a bad habit, often stay up late, dieting, weight loss, mental stress, these will affect the normal flow of menstruation, may lead to menstruation is always delayed.
If a 17-year-old girl observes that her menstruation is always delayed and accompanied by other uncomfortable symptoms, it is recommended that she seek medical treatment in time.