I Have Had A Small Rash With Blisters On My

I have had a small rash with blisters on my lower back for about 1 week. I developed two single spots on my upper right leg today. The rash on my back looks like pictures of shingles but I do not have any other rash. Could it be shingles. When I was young and my sister had chicken pox my mother never knew if I had them because I only got 3 or 4 spots. I am now 62.