I started suffering from ice pick headache 4 months ago behind the head on left side. I seemed to be cervical pain and it resloved in about 1 week. But about 1 month ago it came back. Now it is an aching pain behind the head sometimes ice pick also. It has spread to about whole left hemisphere. Pain is also near the ear and in left jaw also. Head pain increases if pressure is put on left of head due to sleeping or rest. Sometimes tingling is also felt on left of face. What should I do ??