Seven vertebrae make up the cervical spine with eight pairs of cervical nerves. The individual cervical vertebrae are abbreviated C1, C2, C3, C4, C5, C6, and C7.
You have C3-C6 problems. This is the cause for your arm numbness.
Based on your description, I think the numbness and pain have already caused significant trouble for your life. Therefore, I think that cervical epidural injection would probably be a better choice than massage. Consult your doctor about cervical epidural injection.