Hi I m a 36 year old Asian male, 5 8 tall. I don t smoke or drink. I would like to ask for some advice. This is concerning a shiny red bump on my penile shaft. It hurts when my penis is erect. About a month ago, my penis got painful and swollen so I went to a doctor and he prescribed me some antibiotics. The pain and swelling went away. However, yesterday I masturbated and when I woke up, I discovered a shiny red bump on the area where it swelled before. Can someone tell me what it is? I am extremely worried and anxious, it s affecting my work. Thank you in advance.