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.
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.