Hi, may I answer your health queries right now ? Please type your query here...I have had a headache for over 3 weeks. The pain is in the back of my head on the left side. I feel pain in my ear, jaw and up towards my forehead but only the left side. The pain can be throbbing, stabbing, and electrifying. I also have a lump onthe left side of my neck in the front. The lump has a pulse. What is going on??