yes it is possible but the chances are much lower than regular intercourse. if this person had oral herpes chlamydia / gonorrhea (in the throat) syphilis or a few other stds he could have transferred these pathogens from his mouth to your genitals. again this is not the usual way that stds are transmitted but it can happen. since this is a one-night stand i suspect that you do not know very much about him or his medical history. should you show any suspicious signs of any of these stds you should be carefully examined by your medical provider and be tested.
i am a woman who had a one night stand with only oral sex. if he had an std can i get it from just receiving oral sex?