So frustrating for you I totally understand I have tried most things over the past 40 years. As pain comes from our brains most medications for pain will not work. The nerve blockers will help but side effects and gradually increasing dosage can turn you into a bit of a zombie, morphine and derivatives will eventually do more harm than good eventually damaging your own pain receptors🥺
Nothing will stop the pain but plain ol paracetamol is like our own bodies pain relief (I may be wrong but it's often the case of less is best)
I find some comfort with some breathing techniques that can help to breath through the pain but it's not a cure just a managing thing. Medication even for a couple of mins and Qi-gong (just the gentle stuff, or seated)
I wish you well and hope you find some relief in your discomfort 🙏