Oh and get off online and stop searching for HIV info, causing yourself more harm over no risk encounters.
Talk to a Dr. Your question has nothing to do with a risk assestment. Anxiety of you has nothing to do with HIV.
If your brother had a risk then 3 months is when he can obtain a negative test.
I've just read an article about neuropathy. besides ARS pain which occurs only with the other symptoms, how long will it take for a positive person to develop this kind of condition> how many years to be exact?
Your brother by using a condom did not have a risk.
Leg pain has nothing to do with HIV, never has and never will.