I have pain in the back of my neck, vomiting, feeling ill, pins and needles feeling in upper arms. ?

Go to the ER: If these symptoms are recent in onset, especially if there is any fever, you need to go to the emergency room now. If there is no fever and the symptoms have been present for some time and are not progressing you can wait and be seen tomorrow. An immediate concern would be an infection that could be life threatening. The symptoms may still be part of a serious condition even if not infection.