I recently went to a doctor with abdominal pains. They did a sonogram and found nothing wrong. While I was at my initial consultation the Doctor asked twice if I had any burning when I pee. I do not and still do not have any burning when I pee, but this has made me nervous about STDs. Since the sonogram I have noticed a bump on the base of the underside of my penis. It is tender to the touch and I think it might be herpes. However, I do not seem to have any of the other signs. Plus, I have had the bump for at least a week and half, which seems a lot longer than what I have read. I do shave the area and did so just prior to the bump showing up. So, it could just be an ingrown hair.