It is normal to experience menstrual cycle disruptions during puberty, especially between the ages of 12 and 15. This is because the endocrine hormones in the body have not fully returned to their normal form. It is normal to have periods at intervals of 3 months, 4 months, or once every 6 months. Then, after the age of 16 to 18, as the hormone level slowly returns to normal, this situation will not happen again. It may be that you get a period once a month or more, and that is when the cycle is considered normal. Don’t be overly worried or anxious for a few days, as this may also affect the arrival of your period. If you are very worried, you can also go to the hospital to register for a gynecological examination to determine the thickness of the endometrium and to determine when to have your period according to the thickness of the endometrium.