Oh ok, it looks like maybe you had a low positive the first time. I am curious to know which blood test were ran, the IgM should not be used but rather the IgG.
The next time you have sores below try getting them cultured within 24-48hrs after appearing or just ensure you had the IgG herpes type specific blood test.
It may be something else as all sores or bumps below aren't always herpes. I wish I were able to give you a more definitive answer but it is a bit tricky when it comes to this virus.