Touched A Boil I Have A Red Boil On My Upper Inner Thigh?

I have a red boil on my upper inner thigh? - touched a boil

It is located between the vagina and remove the insides of the thighs. He has been there since I have 11 or 12, and grown over the years. I am now 16 years. This is a red to cook, and the slightest touch is painful painful drawbacks. I hope someone can me an idea, suggestion or opinion as to what it is.