The Unknown Penis Bump

Patient: I have a bump located on my penis and i am kind of worried. im a 15 year old african american male who is sexually active.I once went to see a physician who gave me antibiotics for some form of skin irritation or something.It left for about two months but never fully left.now it has returned to full size and hurt when i try to squeeze it.what do you think it is?what should i do?it is a single bump on the top of the penis,its the only one. I Have no symptoms of flu or anything such as that by the way

Symptoms: No symptoms except the one bump

Doctor: