Irregular periods are a normal occurrence for a 14 year old girl if she is just getting her period. If you have been menstruating for a few years and your periods are still irregular, you need to see a doctor for a checkup. In the first year of menstruation, girls will have irregular periods. Parents do not need to be anxious, but should observe first, as in many cases the periods will gradually become regular. If menstruation is still irregular after a year, the period is prolonged, the amount is not large, but each time lasts for a long time, lasts for 8-10 days, and even the end of menstruation will continue to have the phenomenon of brown discharge. Some children may have delayed periods, which may only occur once every 2-3 months, with heavier amounts each time. Some children may have unusually heavy periods, have menstrual cramps, or have 1-2 periods per month, none of which are normal. If these conditions still occur after a year of menstruation, it is recommended to go to the gynecology department of the hospital for a checkup to clarify if there are any problems with hormone levels, uterus, or ovaries.