I don't have much advice for you as I have never had shingles. However, my MS hug gets real nervy and the pain is horrible. They liken that pain to shingles. Therefore, many hugs for you and I hope you start feeling better soon. (Of note, when my hug is causing nerve pain I find ice helps tremendous in dealing with the pain. You may try some by your armpit and see if that helps.)

Let us know how you are doing.