Vagina odor please help

I think i have a yest infection. I think this has been going on for almost 2 weeks and i can smell an odor coming from my vagina even with pants on. Ill be in class and i bend down to get my pencil since it has fallen and i can smell the odor ! What should i do? Im a 16 year old female, 5'2, around 125 pounds and i am not sexually active? I dont wanna tell my mom i kinda feel embarrassed?