Hope you feel better soon. I had the shingles 3 years ago. I thought it was a spider bite on my upper back/spine area. Then there were blisters. I immediately went to the doctors and they started giving me medication right away. Please check yourself for any type of rash or blisters. This is something you have to catch right away to get medication. I was given an epidural for back pain about 2 weeks before. So, they thought the epidural (steroid) and a low immune system contributed to it.