Gosh, no you don't want shingles at all.
I had a close call a few years back, noticed the start of the outbreak (on the back of my neck of all places) and went to the doc the next day and since it had only just started she was able to prescribe an anti-viral that killed it cold. I was under a lot of stress at the time (grandmother had just passed away) and that was the likely trigger. Seems unlikely the HRT was a catalyst for you.
Get well soon!!