or AIDS, AIDS can be called as the last stage of HIV, Hiv is the virus that causes AIDS, so the test is the same for both, a person is diagnosed with AIDS, after having and hiv positive test, and when their body has a CD4 count lower than 350.
If you had a negative test at six months and no other risks since you are home free by any standard. You take a risk by having sex with someone confirmed to have AIDS although not sure that is what you were saying above. In any event, be careful.