What Causes Vaginal Itching With Burning Sensations And Leg Pain?

hello i dont know what i can do ive had an itchy burning problem down below and its been there months i cant seem to get rid of it i took benerdyl to ease it and canasten creams. the latest one is vagisil it helped a bit but dont know wot to try could i have some infection. also my leg in the last two days has been hurting me dont know why if i stand it not to bad its when i walk or bend could the cream do anything like that im scared as dont know whats going on thanks for listening