Thank you.................Last evening I had mild pain under my left breast, and couldn t figure out the why or cause, some mild pain in my back. This am, woke with a rash of little red blisters, which have now spread under the breast, and up along my left side. No more pain, don t ich just tender. Not one to go to the doctor much. Usually healthy for my 65 yrs ? Could this be Shingles ? Thank you for your help. Sincerely. Do still have a spot on my back which has mild pain, and is sore. Heat seems to help it.