Symptoms are MEANINGLESS when it comes to determining whether you have HIV. There are NO specific HIV symptoms. If you in deed had a real risk, then only a test 3 months after the exposure will let you know your conclusive status. Your five week results are encouraging, but again, if you have had a real risk, then you need to test out to three months for conclusive result.
You don't get resistance to antibiotics with HIV or AIDS. I have to take an antibiotic everyday and have for the last three years seven months.