acne or genital herpie or genital wart?

About  two days ago i noticed a bump on my penis. I cant tell what it is. its kind of like the size of a pea...probubly a little bigger. I first thought  it was pimple because and i can be sure but it looks like theres a little white head { a white spot on it...just like a pimple}. But Im paranoid so Im also thinking it could be a genital wart or genital herpie. i dont know what to think.

[loiloi]

The odd pimple can appear almost anywhere. Do not squeeze or pop this lesion as that could spread bacteria, cause a secondary infection and delay healing time.
Genital warts can vary in appearance, sometimes they are skin-colored bumps and sometimes they have a cauliflower-like appearance.
Have you put yourself at risk sexually?
Eloise x