infection 😬

my v is itchy but not often. i looked at it closely and my inner lips are red and kinda inflammed. ive always had wack discharge ever since i was 12 ( 15 now) and now i have fishy smell. ive always had an unpleasant smell down there but now its worse. im not sexually active so idk how this happened! i did get a spray tan and i had to get naked for that but other than that im confused on what i have and hwere i got it from!!! already asked my mom to go to the doctor but any tips?