I think it is too early for a test to indicate true infection, from your encounter. In addition, a condom-protected encounter lasting a minute or two is an incredibly low risk situation for contracting herpes in the first place.
Either you had HSV 2 prior to this encounter OR it is a false positive. Given your index value, there is about an 85% chance that this is a false positive.
My suggestion is to repeat the IgG test in 6 weeks and see what it shows. If it continues to be a low positive, we can do the western blot at 12 weeks out. I’m sorry you’ll have to wait to find this out. Honestly, I don’t think this low positive indicates a new HSV 2 infection from this encounter.
Terri