I have had a headache for 33 days now, and no medicine seems to work. It isn't stimulated by physical activity or lights. I have had concussions in the past (6 to be exact) but they were a while ago and the head ache pain went away before this pain started. The symptoms like nausea and light sensitive doesn't happen to me. When i cough it temporarily goes away. When i am done coughing it comes back. When i lay my head down i feel pressure and my head ache gets worse.