I am 25yr old female. I have had severe sunburn as a child on several occasions, resulting in blisters all over my body on all occasions. i had a mole on on my lower right leg, it is now white, red outer ring, flaky, itchy, on occasion it bleeds and looks like a sore that hasn't healed in over 7 months. There is a history of cancer in my family, should i be concerned enough to get this looked at?