I was with a woman and I was massaging her genitals. Afterwards, she noticed that I had pre-ejaculate seeping from my urethra. I wiped it off, perhaps using the same hand I had used to touch her. I should note that she did not seem to be excreting at the time, as her vagina felt perfectly dry, but I am also worried that my pre-ejaculate could act as a "gateway" for HIV. Am I at risk for HIV at all?