hi welcome to HCM
-i had gone through your query and understand your concerns. i would come up with the possibility of CERVICAL SPONDYLOSIS
may be the cause for your sufferings.
-degenerative changes in the cervical spine
may produce this complaints.
-lack physical exercises
-poor diet with deficiency of calcium ,are some causative factors.
X-RAY for cervical spine may confirm the diagnosis
I hope this is helpful for you, thank you