Thanks for the photo - it's still a bit unclear, but there are several possibilities for it - wart is still likely, but other kinds of infections are also possible. If you haven't already had them, a blood test
(RPR or VDRL), a swab of your urethra
, and a first-voided urine test for chlamydia are all indicated. If there is any discharge or opening in the skin, then a swab and culture of that should also be done for diagnosis. If the bump is painless, and hasn't changed in a year, (and if the above tests are negative) you could have it removed.
Again, it is important to use condoms when you have sexual relations.
If you are concerned about this, recommend you see a dermatologist
for a specific diagnosis. Hope that helps. Good luck.