Suggest Treatment For Pain In The Arm Due To A Compressed Nerve

I take 20 mg Cypralex, 400 Lamotragine and 1. clonazapam, I have had for 2 months pinched nerve in right shoulder & arm, gradually I can now raise my arm. However I have been taking generic acetephinime 2 x 300 mg twice a day & sometimes aspirin or entrophen to stop pain in arm. I am wondering if my anxiety is increasing due to tylenol 1 small amount codeine - also feel I am getting addicted to the tylenol.