Hello, I ve noticed that since almost a year I m experiencing the cough headaches, at first during the flu infections, but now it s more often, and more unexpected and taking more time, in the back of my head. It is associated with the sometimes with the ringing in my ears, sometimes for hours or even days, Sometimes I feel nauseous, I ve even thought few months ago, that I might be pregnant, but I wasn t. I ve never been the migraine type of person, and never had any king of cases like that in my family. But there where cases of cancer in my close family. Can you tell me, what it could be? Thank you very much for help! Maria