I went to Tijuana, Mexico and had protected sex two times with a sex worker about a month back. Both these acts were done with the use of a condom. Do I stand a risk of getting HIV? I got tested and the results were negative. But this was just a month back. Is it true that you have to get other STD's to get HIV. I am really scared and would really appreciate if you could advice me. Is there more chance of me getting HIV if the sex worker was already infected with HIV?
Should I even bother getting tested?