Heartlady, that's the same area I had shingles. I was on an immune-suppressant drug called Imuran which allowed the virus to become active. I would see your doctor immediately, because if it's shingles, the sooner you are treated the better. It responds very well to medication, generally. I was able to see the shingles 'sores' develop pretty quickly, but initially it was just very, very tender. I'm guessing the experience is a bit different for everyone. I hope you can get into your doc quickly - let us know how you're doing.
"If you trust Google more than you trust your doctor than maybe it's time to switch doctors."