I am a cancer patient in remission from rectal cancer , my last chemo was in dec last week I got a sore on one side of my buttocks, it was tingling and when I woke up I had pain down my leg and in my knee, nerve pain. so I assumed it was shingles, it was burning and itching with this electric pain occasionally down the leg. I was feeling flu like no drs were around cause it was the Thursday before easter, so first thing Monday I went to primary, and she says it may or may not be and starts me on steroids, anti viral and gab a something for the nerve pain, well today is one week since onset and I feel like I have blisters in my rectum, vagina urethra, down my throat and possibly in my lungs, is this possible, I can see blisters in my mouth