Amenorrhea, at 19 years old normally is not usually the case. If it is before the menstruation is very normal, suddenly appeared does not come to menstruation, have to see what the reason. At this age, if you have had an abortion and suddenly don’t have your period after the abortion, you may have adhesions in the uterine cavity, or you may have scraped the uterus too hard during the scraping process, which can lead to damage to the basal layer of the uterine lining, which can also lead to amenorrhea. Then there is Schieffer’s Syndrome, which occurs after having a baby, and some people experience amenorrhea and no longer have periods. These two cases must be further examined to see if there is any other way to relieve the problem. If it is purely menstrual irregularity, none of these phenomena exist, and menstruation does not occur due to endocrine causes, then it is necessary to adjust the symptoms according to the results of endocrine tests. These are probably the only cases, and it depends on which one it belongs to, and then we can treat it accordingly.