I don’t have enough information to answer your question very well. Do you know the values of the IgG antibody test? Was the test an IgG or IgM? You mention both. Can you get this information for me please? Also, can you get the brand name of the test that was done, if possible?
Often herpes is not included in STI testing, so the fact that you had a partner who had a negative STI panel does not necessarily mean that person does not have herpes. Did they say they had a negative herpes antibody test?
Sometimes, a low positive HSV 2 serology can be a false positive, especially when the person has HSV 1. The low positive range for the traditional tests used in the US is 1.1 to 3.5. I’m not sure what test is used in Australia. What I do know is that there are some good herpes experts in Australia and I think the herpes western blot if available there a good confirmatory test.
Unfortunately, 80% of people who are infected with HSV 2 don’t know it. A true positive HSV 2 antibody test means both that you are infected and infectious to others. Most transmission of herpes occurs when the infected person has no symptoms, so it is inaccurate to say if you have no symptoms it doesn’t matter. It does matter if you are infected or not.
Let’s get clear about your diagnosis before we go farther with dealing with something you may not have.
Terri