Insane itching period

Super itchy period what can I do ? I tend to get small OB symptoms during my period this one has been one of the more worse ones. My whole vagina gets alittle itchy and dry but what's killing me right now is Slightly stingy but super itchy in the premium butt area. It didn't travel up the butt the last few periods I applied tea trea oil acne cream and vitamin e and took a Valtrex any other recommendations ?