I'm 19, sexually active and I've had a skin colored bump on the shaft on my penis. I have no idea how long I've had it, but just recently it made me conscious of its presence. I'm pretty sure its a cyst, and no big deal, but I tried squeezing it (not hard) to see if it caused any discomfort. It doesn't hurt at all, but just this morning I noticed that there is a small white dot on the top of the bump. Did I cause irritation and that is how the bump is responding? Or does it sound like something else? Should I consult a doctor?