20 years ago I popped the white head of a pimple but a tiny bump remained under skin. Then two years ago, the bump tripled in size & became translucent over night & I could see a coiled hair inside but the bump never came to a head however every day for the past 2 years the hair has been gradually loosening & surfacing by itself & every day I use my pocket knife to scrape out a piece of hair that's trapped right below the skin & visible to me. What the heck is this? What should I do?