Your lump sounds nothing like herpes to me. I think your doctor’s assessment sounds spot on. Herpes lesions are generally water blisters and don’t have pus in them. I hope your doctor ran a bacterial culture on the pus from the lesion and that you’ll find out what bacteria was growing there. Doxy may well be the best antibiotic. I just don’t think this sounds like herpes to me at all.
Terri