hi,
thank you for providing the brief history of you.
this looks like more or a
nerve entrapment. why don't you meet up an ortho specialist and get assessed and even can undergo an MRI which will be of help is it anything with the disc issue.
also to mention that the neural symptoms like
tingling, numbrness, weakness, pain, twitching etc are related to nerve directly at times.
also get assessed your shoulder because at times when there is a
shoulder injury involved then there will be a weakness and swelling of the shoulder and also a chance where the muscle entraps the nerve and provides unusual symptom.
try doing hot water fermentation for shoulder and neck region.
also to mention, you can take a help of a physical therapist to help you with therapeutic
ultrasound therapy and
TENS for your pain and swelling.
also the physical therapist will assist you in getting back the strength in shoulder and neck muscles.
when the muscles are weak the anatomy of the body changes and the physiology of muscles do not run proper.
with the grace of God you will be fine and at good health in future