What Is The Treatment For Itchy And Painful Vagina?

Well I went to the er last week for a stomach problem and the found out that my cervix was thick and the dohe asked my if i had any discharge at that time i told him i jst got off of my period so I'm not sure so now I've started again but it is different its creaamy and has an order and I'm itching around the opening and the along the walls of my viginia. And it burns what is this and what can I do to fix this