I just noticed right there that there is a small dark-blue/purplish bruise approximately 1 or 2 inches from the base of my penis (not-erect). It causes no pain whatsoever, even to the touch... but it's there. And naturally, any problems, even very small ones in that area can cause concern. I assume this was inflicted during by girlfriend giving me a hand job since she can be a bit rough sometimes, but equally, it could have been during intercourse.So, do I have anything to worry about?