l dryness and itching?

Im only 15 so it cant be menopause... but It started a couple of days before my period so i ignored it. My period ended and i was still unusually dry and itchy. Normally i have an great amount of healthy discharge at all times, but now Im dry and itchy. I lost my virginity after my period ended (we used a condom) but i already had these symptoms before I had . Now Im still dry and annoyingly itchy. I told my mom and she said it sounded like it was just dryness and to google l dryness. I did google it but all it came up with was menopause and im too young for that. I know its not an std i dont have white flecks in my pee (though it does burn a little when i pee because the skin is raw) and there is no white on my skin i look completely healthy im just dry and itchy. I have exellent hygene and i cleanse regularly. Im really confused and scared please help