What Causes Vaginal Skin Burning On Masturbation?

hi, iam 25 yrs old.not married yet...i get periods regularly...but i doubt that do i have the capability to get the motherhood after marriage?bcoz i came to know that every body before marriage they do satisify themself with their hands..but when i tried to do my vigina skin is burning....dont know wether its is bcoz iam afraid or its my diffect...pls sujjest...bcoz i want to be clear before i get married