Hi, most of my life, as far as I can remember, I have had this small oval shaped bump on the bottom of my penis . It is hard, but does not hurt. It is very small and if I try to move it round under my skin, it moves slightly but then goes back into its original position right away. At the end of this bump there appears to be a very small hole.If you could please let me know what it is that would be great. Thanks!