Things happen 3 days ago, I have a very bad headache. It is throbbing pain at the back of my skull & it is like my whole brain is trying to jump off from the skull. Though it does not prolong, it is killing pain. Then, I have this right shoulder pain from my shoulder to the tip of my fingers & I can feel my finger tips have this tickling feeling. Now the pain continues to spread to the right side of my neck. What actually is happening to me ??? Please advise.....