If you think you may have HIV/AIDS you should get tested immediately. After HIV gets in the body it can take up to 3months for the virus to multiply enough for a normal antibody test to detect it. So have another test 3months after your 1st one to be sure. This 2nd test will tell your accurate result, as long as you were not exposed to HIV again in the time between the 1st and 2nd tests. Protect yourself from infection by ALWAYS using a condom or abstaining.
Attribution: Marie Stopes