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It is not typical for herpes to cause intermittent dry skin. The typical lesions of genital herpes could start as an inflamed area, but would then progress to a blister or ulcer. So the description does not sound worrisome for herpes.
However, with the sexual history, it would be appropriate for you to have a blood test for herpes. If she developed symptoms shortly after an encounter with you, you could still be the source, because some people with herpes do not have any recurrent sores. And if you were not the source, she may have had the infection when you had sex with her, so being checked would be appropriate to detect if you have become infected.
So, the description of the penile skin does not sound worrisome, but the recent sexual encounter warrants being checked.
If I can provide any clarification, please let me know.
Please let me know if I can provide any further assistance.
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