About 3 months ago I started getting really weird headaces. first it's like a rock being droped in the road (It litterly sounds and feals like that at the back of my brain) then 'n get realy weird brain cramps al over my brain and a very bad headace. just after that I start feeling sick and as if all my power is drained. it's starting to happen more and more to me and i hate not knowing what it is. the headaces continu aswell as the nausia. My family has a history of cancer and blood illness. Help?