You didn’t go from 0 to 1.09. No one tests zero.
You could try doing another IgG and see what you get this time, sure.
If you decide to do the western blot, you should wait 12 weeks from any concerning encounter. And if you take an extended course of antiviral medicine, it could impact the accuracy of your test results.
Getting herpes at a single encounter is not impossible, just very unlikely.
Terri