Throbbing in the back of my head?

I tried doing the the rubbing exercise on my neck. it only eases the pain temporally and has a 3/10 success rate of actually working to ease the pain. The throbbing is directly in the the back of my head slightly aligned to the right of the spinal cord, and placed along the bone right by the visual cortex. I do not know what to do to get rid of this pain, pain killers do not always work, and even if they do I do not wish to rely on them daily. The pain is throbbing to my heartbeat, it feels as if every time my heart beats, someone brings a chisel down on my brain. It is affecting my job performance, and my school performance. Does any one have a way to get rid of this pain?