Telling my mom about my period

Tia

So my mom has been requiring me to inform her everytime i start and end my period. i’m older now and i don’t feel that it’s as necessary/comfortable for me to tell her everytime. of course i would tell her if i’m late or early regardless. even if i don’t tell her, she’ll ask anyway. what do i do? should i tell her i’m uncomfortable? is it her right to know?