Your rash has none of the characteristics of herpes. The distribution (groin and perianal) suggests irritation or psoriasis rather than yeast or fungus. In my experience, once you get rid of the inflammation (in your case with one or both of the costisones--betamethosone and desonide--rather than the antifungals--clotrimazole and Loprox, the best thing to do is stop everything and just use a bland moisturizer, if that.
I don't know what to make of the Western blot test, and cannot undertsand why it was done. I don't think the canker sores are related to anything, nor is the irritation at the corners of the mouth relevant.
Time to stop worrying.
Best.
Dr. Rockoff