I am experiencing arm pain and nerve pain. the following also describes me: finger tingling. what should i do? i believe i have some impingement in my neck

Arm discomfort: Assuming you are correct then the impingement likely is at spinal level;an MRI & /or nerve conduction study would be confirmatory.Other diagnoses including cardiac must be considered

Nerve & arm pain: There are a variety of possible causes for your symptoms. These include pinched nerve, diabetes, neuropathy after chemo, and more. Please see your doc. He/she will diagnose or rule out medical conditions. Peace and good health.

Be seen: I would certainly recommend you be seen. An mri will likely show if you do in fact have nerve impingement. There are a number of options available.