Second, it is almost impossible for herpes to not undergo substantial improvement within 2-3 days after starting an antiherpetic drug like
acyclovir, and 7 days is far too long.
HSV can be
resistant to these drugs, but that occurs almost entirely in people who have been taking the drugs for a long time, typically for many months. And it's usually limited to people with severe immune deficiency, like AIDS, cancer chemotherapy, etc.