You should see a orthopedic spine specialist. Preferably a well respected one. An MRI of c-spine, mid and lower back would have to be done. The spine specialist would then evaluate for damage and any treatment after. Minor damage can cause your back and neck to always be tensed up.
I started with an orthopedic therapist who tried to adjust my spine. The original findings by the therapist was a stacked and twisted vertabrae. What that means was my lower spine is twisted one way and my mid level is twisted the other. The twist is not much but it causes me pain. There may also be bulging disks in mid and lower back. I am presently waiting to get the back MRI.
I have an appt with spine Dr. after waiting more than 4 and 1/2 months. The relief of just knowing I am going is palpable even though I am in pain almost every single day. Best of luck to you.