HELP ITCHYYYY

So this isn’t my first period I started my period last year if ur wondering am 13 years old. So I have been REALLY itchy down there for almost a week and a half I change my pants every day nd I wash myself everyday too I don’t use anything scented for down there nd I’m still itchy. It’s gotten REALLY BAD nd I don’t know what to do coz I’m embarrassed to tell anyone PLZ HELP 😪😪