Hi, I was with an escort last night, and she said she never does anything without a condom and and that she does not escort that much. While we had sex, I had trouble getting it in her as she was tight and we had sex for about a min prob less. Everything else I know was no risk. The issue is when l pulled out I noticed the condom must have slipped b/c it was only covering 3/4 or a little less than that of my penis. She was not concerned b/c she said I was not in all the way anyway. What kind of risk is that? Does Hiv get transmitted to the penis shaft or does the penis head have to be exposed? When shld I test?