You might already have it. Many people who are infected are asymptomatic. General STD screens also don't test for herpes because so many people have it that the

You might already have it. Many people who are infected are asymptomatic. General STD screens also don't test for herpes because so many people have it that the stress of finding out is more harmful that actually knowing you have it (or so the logic goes. I've also heard that it's because the test has high false positive rates). I spent a long time freaked out about this... then I realized that it's basically an inevitability. We'll all be dead in 80 years anyways :)