I had shingles earlier this year. I was surprised at how painful it was. I think the worst was over after about two weeks, but I certainly didn't get a lot of sleep during that time.
I think it was nurofen and paracetamol that I took, up to the maximum daily dose for each, but staggered the pills. So, I took nurofen, then two hours later took the paracetamol, and so on. That did help in dealing with the pain during the day, but I'd often wake in the middle of the night but didn't take anything before starting the pills again at breakfast.
My rash was around my chest, so wearing a bra was impossible. Thank goodness for loose, baggy tops! It might help you if you wear loose pyjama bottoms so there's no seams to irritate the rash.
When the pain disturbed my sleep, I would go and sleep on the sofa on my non-painful side. That might help you as well, as I found it impossible to inadvertently turn over on to the painful side when asleep.
It really is awful. You have my sympathy.
*Best to check with someone knowledgeable about what painkillers you can take together.