My primary care physician recently diagnosed two small bumps on my scrotum as being "cosmetic genital warts." However, over the past year i have had penetrative anal sex once, and i wore a latex condom start to finish. Although, hpv is a highly contagious disease, from my online research the odds seem low that someone would catch it from a single protected encounter. Did I just get super unlucky or is this more likely to be something I picked up in my past somewhere?