URGENT!How to force your parents to take you to the doctor when you might have strept throat!?

Hi im 12 years old and am in serious pain! my throat hurts so bad that i can barely eat,or talk! they just say its a regular sore throat which i have had many before but this hurts alo t more than a normal sore throat! my parents wont take me and ive been begging but they just say NO! I really need help here!