My husband have noticed a small hard lump under his foreskin, just below the head. It is not sore, but when his penis is errect he can feel it, quite promenantly. He can also feel it slightly when it's flaccid. He is embarassed to go to doctor. I am wondering what this could be and if its anything major? its not causing any problems, and its not uncomfortable or sore, i am jus concerned about him.