I don't know if somebody would call this a headache, but I do.
Every time I shake my head up and down i feel slight pain on my left upper side. Also, when I shake it lightly, I don't feel it, I have to shake my head a bit more. I have felt this for some time, but not all the time, just most of the time. Some days, I just don't feel it. On a scale where the strongest pain is 10, I would describe this as 1, maybe occasionally 2.
Also, sometimes, withou shaking my head, I feel a little aching feeling going to my ear and ear surroundings, up and down from my ear, but that is only a matter of seconds too.
I am afraid this could be a brain tumor and I keep obsessing with that.
Thank you all for answers.