Welcome to HCM,
The pain you have described is more likely to be because of neuropathic type, or a muscle spasm in the neck muscles,tonsillitis may be there and can have some lymph glands but they subside once infection is controlled with antibiotics.
Pain is severe enough to requre analgesic all the time and even disturbing your sleep.
Is there any kind of trauma to head or neck,it would help if we know the age as certain degerative diseases occur in particular age group like cervical spondylosis
It would be great if you consult a Orthopaedic surgeon
to findout cause of pain as good physical examination will give clue to the diagnosis.
A Complete blood count
and routine test along with a MRI of Spine will be very useful,and if Lymph gland persists and if required a Lymph node biopsy
may be done to help in the diagnosis and treatment may be planned accordingly.
In the mean time use a small pillow and hot foemtation along with analgesics to get some relief.
Good luck to you.