Glad to meet you, although sorry under these circumstances.
How long ago was the surgery? I didn't quite understand in your post. Whether we are addicts or not, there will be times, such as a major surgery, when we need pain relief. That is fine, IF we are honest and totally upfront with all our doctors and let them know that painkillers are an issue for us.
I had an ER visit because of a really severe kidney infection. I told the ER doctor right up front that I had come off of all opiates. He thanked me for letting him know. The pain was unbearable and I needed 3 shots of morphine to calm it down. I was sent home with a script for a small amount of... ummm, probably Vicodin. I used them, as directed for the next couple of days and then just ditched the rest.
Another thing I did early on in my bid to recover and restore myself, was to call ALL of my doctors and tell them I was coming off all opiates. I wanted that safeguard in case I faltered. Only my primary care doctor prescibed the pain killers for my tapering.
Funny thing... although I still have pain, it is absolutely no greater now than when I was taking the opiates. Without them, I have rediscovered the great benefit of using ice and heat. Also, aspirin is a great painkiller. I can truly feel the effects of it now. Once we start with strong painkillers, we can so easily forget about the simple things that can help.
I wish you well