About a month ago I received oral sex from a girl I met through friends. She was also on top my me, naked, although there was never any penatrative vaginal sex. I had shaved prior to, but from my understanding, a superficial cut like that (assuming I even had one) wouldn't be able to transmit something like HIV. I tested negative prior to this "exposure" and have never been involved sexually with a high risk group (gay men, intravenous drug users). My anxiety is just going crazy with this. Could someone shed some light for me? Any reason to get tested?? Thank you!