The common upper neck injury is usually too subtle/mild to be imaged on a CT Scan or MRI. It is more likely to be found by an upper cervical chiropractor, or osteopath or physical therapist.

You should be taking a bit more than the normal amounts of B-12, D-3, magnesium w/ calcium (citrate is best). The minimum health range for B-12 starts at 300 picograms/mL but the good level is close to 1000 picograms/mL.

Sarotex (amitriptyline) is commonly prescribed for PCS headaches, insomnia and depression. It is not a healing agent. None of the meds you listed are.

Your smart phone may be a cause of fatigue because the screen changes so quickly as you scroll. That is a lot of visual processing for an injured brain.