I don’t know what brand of test you had. It would help me enormously to know what lab did your test so I could see the “normals”. Do you happen to have those? If it was one of the usual labs, LabCorp or Herpeselect ( I doubt it was that), then you have a very well developed antibody response. That did NOT happen in four days. Again, depending upon the test that you had done, you’ve likely had herpes for a while. Which, in your situation, is likely a good thing. Has your regular partner been tested?