One thing I've always wondered about safe sex. If both you and your partner are clean and are in a monogamous relationship -- is it possibly to contract an STI/STD? (assuming condom WAS used). I imagine one can, but what are the odds? Google was useless in this case, albeit I may not have been using the right key words. i.e. I just had a screening and it was clear. Girl is a virgin -- therefore, odds are minimal or? Thanks.