Two nights ago, I had unprotected sex with another girl, but I pulled out within a minute after realizing what I was doing. I know I had precum on my penis, but there wasn't very much penetration. Afterwards, we settled on just having unprotected oral sex, where I gave and she received. I know vaginal secretions were there, and some of that probably transferred in my mouth. I never ended up ejaculating during vaginal sex, so she later just masturbated me with her hand. None of my semen went anywhere near her.What are the chances of me receiving any STDs, including HIV? I don't really know if she's clean, but it was my first time having sex.