hiv probability, safe to resume sex?

Hi. A little over one month after my last sexual encounter with my ex-boyfriend, I tested negative for HIV. We slept together only about 4 times, but each time was unprotected. As far as I know, he never ejaculated inside of me. I trust that he would tell me if he knew he was HIV+, but I'm not sure if he has ever been tested. If I could ask him to get tested now, I would, but we are not even close to being on speaking terms. Anyway, I am back to dating my first love and only other sexual partner. Though I believe he was a virgin before me, I had him get a general STD test before sleeping with him again. He tested negative for every infection. He understands the situation and wants to go back to having unprotected sex with me. I do, too. I really really doubt that my ex-boyfriend carried the virus, but I am a very anxious person. Is it really necessary for me to wait two more months before having unprotected sex? I ask this based on the unlikelihood that my past partner ever carried HIV and the fact that I tested negative after a month. I am showing no symptoms.

Also, I am a straight female. Every point of exposure I might have met would have been through vaginal intercourse.

[Teak]

Yes it is necessary to test at 3 months to obtain your conclusive test result.

[user880]

Thanks, I will continue to use protection until I can get tested at the 3 month mark then. But, for my mind's sake, how reliable would my negative test have been? Do you have any statistics/percentages?

[Teak]

Statistics and percentages will not tell you your status. Don't even use them.