I will reinforce that you should get the meds. You should know, though, that the antivirals can also cause stomach problems, diarrhea, etc. AND you should also know that you SHOULD NOT take NSAIDs for the pain.
NSAID will not work for nerve pain anyways, neither does Acetaminophen.
My tummy was being fine when I had the shingles. I was already diagnosed with UC when I got it but I also was in remission thanks to Remicade. By the way, I believe that my shingles were some sort of a side effect by Remicade.