First, I'll give the broken record response: you need to discuss the specifics with your doctor -- he or she should provide interpretive results of any tests that you have.
However, I can tell you a bit about the test:
the gG in "HSV GG" stands for "glycoprotein", which you can think of as the virus's "fingerprint" -- Glycoprotein chains are unique viral markers.
The issue with your test may be that HSV-1 and HSV-2 are similar over much of the length of their individual chains -- HSV-1 has a shorter chain length than HSV-2 but otherwise is very similar compositionally, so it can cause the HSV GG test to throw false-positives when testing for HSV-2. Most people have been exposed to HSV-1 at some point, so that's why you're gG may not indicate with certainty if you have genital herpes -- in the absence of an active lesion that can be swabbed and tested it can be tricky to diagnose which strain you have and where the primary infection site is located. Although it's possible to have an active HSV-1 genital expression it's not the common site for that strain... most HSV-1 infections will be inactive or oral (cold sores).
There are a number of gG test types available to detect HSV, some are more specific than others. You should talk with your doctor about the practicality of having one of the more specific HSV-2 gG tests done.
Good luck, and I'll keep my fingers crossed that you're negative for HSV-2.