13 year old with irregular periods

it really depends on how long u have had ur period for. sometime it might take u sometime to have a regular period. there r some people on the other hand that don't ever have a regular period like myself. I had to get put on birth control my period because I would go months with out a period or even a year with out one. if u don't have a period for 6 months u will need to go to a gyn because it is not good for ur female organs anx puts u in at a higher chance of cancer.