Probably a zit OR an acne cyst. And even if it WERE what you said, those skin cancers stay on the surface and don't invade things, they can be removed right at the doctor's. It's Melanoma that is serious and that is NOT Melanoma.
Of course if you keep picking at it it WON'T go away. I keep picking at a spot on my scalp and it's been scabbing up for over a year already.