Hello, im a 16 year old boy from norway that have had a lump on the penis shaft for around 6-8 months (or more) the lump appears when the penis is erect and i touch the area where the lump is, it's not there instantly when erect but when i touch the location it comes up slowly. it's not very big but tiny. It's very hard and not moveable. i also have some dark brown patches on my foreskin that my doctor have looked at but he said it's nothing. he also felt for the lump but couldn't find and just said that the lump is nothing aswell. but im still very scared of penile cancer. what can this be? :( my mom, everyone around me is going crazy because im telling them so often that i have this. please tell me what it could be x