nina
Well, it might be a blood pressure headache it does not hurt to go and get a physical and find out if it is i dont think its a tumor because you would feel or do other odd things when you have a tumor in your head..my father had a tumor in his head...he would blank out, be spacey, he didnt have pain from it, matter of fact he never knew he had it til he broke his neck but when a tumor grows thats when you have symptoms because its putting pressure on other nerves its like a big fat ball the pain comes from the pressure. But i might observe that maybe its just blood pressure, or maybe you lifted something or laid wrong in your sleep...but you should get an experts opinion on this!! See a doctor!!