your symptoms of some thing sour and sharp chill going down the spine and between the shoulder blades probably sugessts you may be having cervical disc problem especially at C6/C7 region this sugessts that your posterior spinal coloum and spinothalamic tract
arebeing compressed when ever you move or bend the neck area. do you neck pain
and associated weakness of the upper limbs/ radiating pain
along the hands? you may intially need x-ray cervical spine
AP and LATERAL views and if any thing abnormal in it, you may need MRI cervical spine for further evaluation. mean while a advice to you is to wear a cervical collar
, and take rejunex plus tablets once a day for atleast one week.