My Genital Area ( Both Vagina Area And Above The

My genital area ( both vagina area and above the anus ) have been very itchy lately. It isn't itchy 24/7 but is common and can get extremely itchy at points where I itch so much my vagina swells up a little. I have put talcum powder on both the area's and it seems to stop the itchy for a little while but is there any way I can stop it completely, do I have a disease ? Heeellllppppp!!