Old Thoracotomy Scar Injury

In january I started getting extreme pulling sensations in my ribs in the lower front side, then pain like my lung was being ripped out of my chest. I had a thoracotomy 11 years ago and ive been told that I have scar tissue irretating the nerve that runs along the rib. I'm being treated in a pain clinic with intercostal nerve blocks using steroids and god knows what else. I've been treated for pluracy and have had an mri of my thoracic and cervical spine. Bone spurs were found but the dr's say they can't see any pinching of the nerve so they have cleared my spine. A ct scan just shows scar tissue and they can't see any nerve entraptment. When I start doing anything strenueos the muscle under my arm pit must be hardening and the scar tissue seems to be pushing on the nerve. It is overwelming pain that makes me nauseous and overtakes my upper trunk and shoulder area. I am basically disabled on my right side. They will do injections for another month but I have not improved after already completing 7 weeks of injections. They tell me to be patient but i'm wondering if this treatment is the right thing. The muscle spasms after the injections are almost unbearable! Has anybody out there experienced anything like this and do you have any advice if this injection therapy does not work? Also they say they can burn the nerve out but it will grow back and i'll have to deal with this again so the muscle should be repaired. They say surgery to remove the scar tissue is not an option. Help! I'm only 47 and need to get better to support my family. Any info would be greatly appreciated!