Other than a blood test for herpes, what kind of testing did you have done? Any other STD testing? Testing for yeast or bacterial vaginitis? If you don't know, you should call your doctor and ask for specific testing that they did.
It doesn't sound like herpes at all, and your blood test supports that. You could have a pinched nerve, an infection like bacterial vaginitis, a urinary tract infection, or any number of things.
Your gyno sounds a bit flaky, to be honest, and shouldn't be diagnosing herpes based on symptoms, but on lab tests (especially such vague symptoms). If you don't trust her, find another doc. If you are in the US, you might try Planned Parenthood. They do STD testing and are really good with other women's health issues.
Good luck!