Gemi, I agree totally. The risk is very, very low, but in theory, there is a risk.
Get some condoms, put them in your purse, your nightstand, your coffee table, or wherever you might need them. Be prepared. :)
Hi, i would not be overly worried about contracting any std from your brief encounter but i must say him having his penis inside you for a few seconds is a risk for all stds. If you have a family doctor you might want to talk to them about this to ease your anxiety.