I masturbate gently, using lubricant after 2 months gap now. Two days after the masturbation my penis pains like veins and nerves of my penis irritating me. Additional information- I have been masturbating for ten years 2-3 times per day. I already lessen the frequency from the past year as I know. Masturbation is healthy. But the problem is veins / nerves are irritating me oftenly. Large and bulky veins are also seen in flaccid penis, as well as erect penis. Neg blood, scrotum and urine report PLEASE SUGGEST SOMETHING I do exercise and eat healthy diet and also m completely sober and vegetarian.