Hi I actually found a very similar question to mine that was asked a couple years back which was " Hello Doctor. Thank you in advance for your advice. Is a pimple on the shaft of my penis a sign of an STD? Several weeks ago I noticed a small painless and colorless bump on my penis shaft, right below my foreskin scar. It was about the size of a BB. It looked it was just a bulging vein. I thought nothing of it and forgot about it. It did go away. Last night I noticed it again in the same spot. This time i squeezed it and it popped. A small amount of puss came out. It was painless, and now it is just a small red spot. " You answered it might not be std but my question is....Will the red spot ever go away? I just popped it a couple days ago its no longer a bump but just red. What can i do?