13-year-old menstrual period has not been clean, may be and gonadal axis development immaturity related, first adjust the lifestyle, you can observe.
13-year-old girls, due to the immaturity of the development of reproductive organs, menstruation will usually be irregular after the onset of the situation, generally belong to the normal physiological phenomenon, first pay attention to observe, do not need to worry too much. Generally with the growth and development gradually mature, the menstrual cycle should be gradually regular, if half a year later still such a situation, it is recommended to go to the gynecological examination.
It is recommended not to do strenuous exercise during menstruation, pay attention to warmth, avoid cold, pay attention to more rest, and keep enough sleep. Ensure that the mood is relaxed, pay attention to diet light, balanced nutrition, eat less cold, spicy stimulating food. Pay attention to personal hygiene, change underwear and sanitary pads regularly.
If accompanied by other discomforts, you should consult a doctor in time to find out the cause.