There are some facts about HIV that we all should know, and maybe that will ease our minds about that subject:
1) HIV is a virus very difficult to transmit. Many people have been in risk of getting it, by having several unprotected contacts with hiv positives and still they didn't get it. Yes, it can be transmitted in just one risky contact, but it's a very uncommon situation and it's related maybe with the presence of another std's like active genital herpes.
2) ARS symptoms happen to about 70% of people infected. Usually happens between 2 and 4 weeks after infection. When ARS does ocurred is a Mononucleosis-alike illness (it has nothing to do with the common flu). The main symptom of ARS is a very high fever, and many times, swollen gland nodes in neck, groin and armpit. The lymph nodes get huge, so big that are noticiable without touching. I wonder how many of us actually got a fever and huge lymph nodes. In my case i had very low fever, and little swollen lymph nodes.
3) The rest, 30% of people infected with hiv don't feel a thing or the symptoms are so mild that can pass unnoticed. After ARS, the symptoms dissapear and don't show up until many years later when the inmune system is severaly compromised.
4) So, ARS symptoms are not permanent. They go away after two or three weeks and the person feels good, maybe the better he/she has felt ever in their life.
You have to realize that we are all symptomatic after very low risk encounters. The most important thing is that we all have negative hiv tests after the window period. Aren't all these arguments enough to rule out hiv?
I edit to add that all those thing were explained to me by the best hiv specialist in my country. He's been working with hiv patients since 1981, when they didn't even know too much about the virus. And he told me i can absolutly rule out hiv.