I recently noticed a bump on my shaft on the bottom side. I am sexually active. I have been with my girlfriend for three years now and havent been with anybody else in that time period. Is this bump a wart? I did the dumb thing and played with it got cut open and started bleeding. I also have heard that your skin goes through warts which it appears to do so on this bump as well. I have looked at numerous pictures and they look nothing like what I have. I also used vinegar on the bump and nothing came of it except the outside of the bump turned white. I have also heard that the vinegar test is not reliable is this true?Should i be concerned about this bump? Is this a genital wart or should I not even be concerned? Please help me