Help I need to convince my mom

I REALLY REALLY REALLY want to go on birth control. My periods are SO fucking painful and I can’t stand it anymore. I almost pass out because it just hurts so fûcking bad.

I’m 15 and my mom says I can’t go on it because “eVeRyOnE gEtS pAiNfUl CrAmPs” and she thinks I’m going to have sex if I go one it (no thank you) and shit like that but I’m like no fucking way I need this to stop.

ALSO

I’ve had my period of YEARS and it’s so irregular. I can go a couple months without having it and it’s just UGH

I need to convince my mom to let me go in birth control