 [ Symptoms ] why is having an infection such a big problem for cancer patients on chemotherapy [ Disease ] 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