I cannot help but wonder if you feel that you answered your own questions as you were writing them to me. As you point out, you are very, very low risk for infection. In addition to the points that you have already made, let me remind you that, no matter who your recent partners were, they are unlikely to have HIV. Then with the use of condoms, the 1 in 1000 chance that a person would get HIV from an infected partner is reduced to less than 1 in a million. In persons who use condoms, it is not unusual for genital secretions to get on uncovered skin, nonetheless persons are protected against HIV. Similarly, there is no risk to you of having had your scrotum sucked in the course of your sexual activity. You are not at risk.
As for your muscle aches and other symptoms, while I cannot say where you got it, I suspect you got a community acquired, non-STD/HIV viral infection. Many people who get flu-like illnesses do not know where they get them from. Besides the statistical very low probability that your symptoms due to HIV, I agree with you that 6 days is really too early for the ARS.
Bottom line, you really have nothing to worry about. Try to stay calm until you are tested at around 4 weeks. At that time when the test comes back negative as I am confident it will, you will know that you did not get HIV. Take care. EWH
Oh also I can't figure out what else could be causing these muscle aches and joint stiffness, I get feelings of light headiness and get really weak feeling late at night. I know I am very very low risk but these symptoms have me freaking out.