If you were infected 10-12 years ago, chances are you'd show some sign of illness by now. That said, there are NO guarantees. There are people in this forum who were infected for almost 20 years ( without medication) before developing symptoms. If you have doubts about your HIV status, you should get tested( if only for your peace of mind). I don't know your sexual history, but it's obvious you're concerned. You can NEVER tell your HIV status by that of your family members. The symptoms you've cited in your past all seem normal for a man your age and health. These things happen to people in so-called perfect health.
HIV should never be assumed or dismissed by the presence or absence of ANY symptoms. If you continue to have doubts about your status, request a RAPID or ORASURE test with your DR. The results are available almose instantly.