This is the HPV forum. You might be able to get more information on the HIV prevention forum. Note that the "Living with HPV forum" is only for people with a positive HIV diagnosis, and these sort of questions are not permitted there.
Here are 3 great resources for you:
http://www.medhelp.org/forums/HIV-Prevention/show/117 (expert)
http://www.medhelp.org/forums/HIV---International/show/383 (expert)
http://www.medhelp.org/forums/HIV-Prevention/show/79 (community)
The likelihood that you got hiv is extremely slim. It's up around the likelihood of getting struck by lightning. Hiv is a problem for homosexual men and drug users. The worry is unwarranted. People who are generally really strict about protection generally dont get stds. People who have never used protection, like me, generally get the stds whether the person claims to be clean or not. I got low-risk hpv, with visible warts. I have never used protection with a condom, and have been with 9 different girls. This puts me in a high risk category. But one time with a girl....did she say she was clean?
Even if not, i wouldnt sweat it.
The internet is lying to you. STD's, with an exception to HIV and high risk hpv really are not a big deal. The fear you have is something i had as well, but now that i have genital warts the fear is released. It was THIS that i was afraid of this entire time? Don't buy into the photos you find on the web, they look nothing like the real thing. Just relax nothing will happen quickly. Just be safe wear protection next time.
Later,
Jesse