A few days ago a noticed a small lump inside the skin of my penis, it looks about the same size and shape as a grain of rice (thin about 1cm or less in length), it’s not seemingly connected to anything and when I pull my fore skin up it moves with the skin so it’s actually inside the skin not on the penis.
It doesn’t hurt, bleed or have any colour. It looks white under the skin if I stretch the skin it is very noticeable both by touch and feel when erect. It’s quite hard almost like cartilage. It’s not an STD since I got tested recently and it’s not a vein. Any ideas what this is?