thank you for providing the brief history of you.
since you mentioned you have C6 level radiculopathy
it is the matter to get treated for it by having a close communication with a spine surgeon
and a physical therapist.
your nausea is because of the tramadol as most medicines have one or the other effects. your nausea cannot be because of the nerve irritation
you need to get a meeting with a physical therapist who will first help for pain relief via TENS as most research have proved it to be successful for controlling pain.
later on doing physical exercise under the guidance of the physical therapist for strengthening the muscles of the neck and upper limb.
once the radicular symptoms comes down your tramadol will be stopped and your nausea feeling will be gone.
too much of tramadol on long term will affect the kidney and increase the creatinine
levels and later on pain killer will be contr indicated for you.
so have a good and smooth recovery I recommend you to start physical therapy
and get helped.
with the grace of God I wish you a speedy recovery