Do not self-diagnose or self-medicate - go to the doctors.
Everyone is embarrassed when they are younger and have to go to the doctors with something down below. They are professional, have seen it all before and will deal with far more gross things everyday that what you have.
Seeing your doctor is the mature, normal and healthy thing to do. It will stand you in good stead for the future. You'd see the doctors for a broken arm, this is the same thing.
Get it checked out so it can be treated before it gets worse or more likely before you make it worse.