Have genital herpes. no visible outbreak at time of sex & used a condom but base of penis was partly exposed. what are the chances of hiv?

Low, but depends: Who did you have sex with? Was it a commercial sex worker? Even if it was an unreliable partner, your risk is low. Get an HIV nucleic acid test at 6 months after this episode, to be sure.

It depends: Herpes doe snot have much to do with HIV except both of theses conditions are called STDs(sexually transmitted disease). There is a good blood test to find out if you have HIV infection. It is a commonly done test if a person has multiple sex partners.