A couple days ago I found a small, soft, mildly tender lump on the underaide of my lower penile shaft. The center of it is a whitish tented skin color and the outside surrounding area is reddish. It is basically painless just easily irritated, if that makes sense. I have also just recently noticed, I am unsure if it was there the first time I noticed the lump, the skin just above the lump seems to be kind of stretched out. The hole where hair would grow through appears to be widened and stretched. Also the skin above the lump almost resembles a kind of burnt or scared skin look. What do I do and what could this be?