I don’t think you can make anything specific of your testing at this point as the testing you had done was only 4 weeks after a potential infection. I do think that you might be jumping the conclusion that this is HSV without enough evidence. The blisters do sound discouraging, I know, but normally people don’t report herpes lesions as pin head blisters – they are normally more remarkable. Do you know the HSV status of the partner with whom you had sex?
Your IgG test for HSV 1 is still well under the cutoff for positive – I’m confused about why you think that is throwing things off?