Is it normal for 15-year-old menstruation to not come for several months

If you have just entered puberty, that is, over 11 years old, due to the immature development of the gonadal axis and the unstable secretion of hormones, irregular menstruation usually occurs within 5 years of menstruation, if more than 5 years of menstruation is still not normal, you need to be examined and treated. 5 years of menstruation, as long as it is not long-term vaginal bleeding, and the amount of bleeding is relatively large, the symptoms of anemia, menopause 3-5 months, is generally not The treatment is usually not necessary. If the menstruation does not come for more than half a year, it is recommended to go to the hospital for examination. Therefore, if there are no uncomfortable symptoms and no anemia during puberty, menopause within half a year can be observed and does not require treatment.