Okay, so you tested positive for hsv1 on a blood test? Do you have those results still? Do you have an index value on the test?
I ask because 18 days is really early to test positive, and I'm wondering if this was a pre-existing hsv1 infection, maybe an oral one.
What you have on your arm(?) isn't an hsv outbreak. I don't know what it is, but it's not herpes.
Herpes infects nerve groups, and genital herpes infects the sacral ganglia. This means you'd only get symptoms on your body from the waist down, and most often in the boxer shorts area.
Have you seen a doctor for these spots?