About 2 month ago, I noticed a small whitish bump on my penis. I am sexually active, and had unprotected sex with a girl who didn't disclose that she had stage IV cervical cancer. I assumed that it could be the Herpes virus or a genital wart, so I went to a local STD testing location. My blood/urine tests results stated that I didn't test for any STD's. During a physical exam the doctor told me the bump was probably from masturbation. It has been well over a month since that visit, and the bump has not changed its appearance at all. My question is, would it be wise to go to get a second opinion from another doctor or should I just give the bump more time to go away on its own? If I should see another doctor, would you recommend a urologist?