After taking a shower recently, I noticed a long, thick redish/purplish line running across the sides of my testicles, all the way from one to the other. I wear the ROP, but I don't think this is the cause of it. Yesterday was the first day I'd Penis Enlargement'd in 4 days, but I never do any testicle work. Anyone know what the problem may be? There is no pain at all.