I see that you also posted your question with Dr. Hood on the STD forum. I agree completely with his response to you.
The fact that these lesions are spread out so far apart from each other does not at all suggest herpes. Also, if you have had no sex since the end of April, this definitely would not be your first infection, and that is really the only time we see a wide distribution of lesions. And even then, they aren't as spread out as you describe yours as being. Also, they normal do form clusters, and sometimes those little clusters come together and form a big blister or ulcer.
It also isn't suggestive of shingles, which usually looks like a row of blisters that follow one nerve pathway. The fact that you had shingles (if you truly did) in 2003, suggests that you would be very unlikely to get it again in your lifetime. The immunity boost that shingles provides is what keeps shingles from rarely being a recurrent condition. That's actually how the vaccine works.
Your negative antibody test also works against this being herpes as do the sexual behaviors that you've had lately. Herpes can be transmitted via genital to genital rubbing from time to time, but that's also not what you are describing and that too, was quite a while ago, too long for this to be a primary herpes infection.
Ned is right, you need someone to look at this in person for an accurate diagnosis, and even if it is gone when you actually go in, they should be able to provide you with some idea about what is going on.
Folliculitis is certainly a possibility here. Are the blisters all on places that have a hair coming out of them?
Terri
Thank you, Terri, and apologies for the multiple posts of the same question. To be clear, while the first blisters were several inches apart, the subsequent ones are fairly grouped in the crease of my groin (not clusters, but grouped). While it's hard to tell on many of them, some are definitely centered on a hair follicle. I have recurrent Folliculitis on my torso, but that was typically brought on by winter dry skin and it doesn't necessarily blister. Could the ease of blistering be because the skin is much thinner and more fragile in the groin area?