PMDD as a teen?

as a 17 yr old, i don’t really understand what’s been happening to me lately. Every month, a day before my period, I’ll start to get really emotional and act really dramatic to the point where i don’t believe i can control it. i believe it to be premenstrual dysphoric disorder. i googled what it is and it looked like i had similar symptoms. i’m not sure if i should ask my dad and see if he’ll take me to a doctor for it but im not sure if they’d be able to diagnose it. i guess i mostly just want advice or some reassurance about this. i don’t like acting the way i do the days before a cycle and i wanna fix this.