OK someone please help me find out what is wrong here. I have a lump on the inside of my penis. I will try to tell you where....if you look at your penis from the top go straight to the botton of the shaft, at the top where the shaft meets your body and hair, right in the center if you push in and down, towards your anus, there is a very hard lump connected to a tube or vein. The lump is about the size of a pencil eraser and very hard. When soft I have no problems with it but when erect it is very painful...very much so if the penis is pulled downward. Thanks for any help.