I've had many back operations including injections and nerve blocks. Surgeries cause an incurable disease called arachnoiditis which is caused by spinal leak from the bad surgery here at the Mayo Clinic. Haven't slept for years all night ain't gone too many doctors to try and figure out what's going on with my pelvic area. Finally got you a great pain doctor says look at you want to sleep at night? I am taking oxycodone 5 mg at night and I sleep like a baby now. I've given in cuz there is no cure and there's no fix. Opioids aren't bad you just got to know how to take him and get the right kind of doctor to give it to you. Just be careful don't overdo it control it exercise like you're doing but stop the injections and nerve blocks. Just stop the pain. 5mg Oxycodone is not going to hurt you once or twice a day.