Should I go to the doctor for a sore/dry throat and hoarse voice that i've had for 3 months?

I have to clear my throat every time i talk to make sure it doesn't sound hoarse. my mouth/throat is super dry every morning and night. water only helps for like 3 minutes. should i go to the doctor or is he just going to say i am dehydrated? i drink like 6 glasses of water a day i guess and i'm a 15 year old girl.