Over the course of a year I've thought I have had nearly every type of cancer, ALS, MS, and lupus. I can't stop, it's like my mind is addicted to feeling like I'm dying. My current fear is a brain tumor, due in part to headaches, dizziness and a shaky/possibly weak right hand. The thing is, some of these symptoms go away the minute i'm distracted, but I cant stop thinking about it. I need help, i don't know what to do. If I'm feeling okay, then I start to think about when I might not actually be okay and it freaks me out bad. I just need some feedback or something, maybe some opinions, I have OCD, anxiety, and depression, possibly bipolar disorder as well. Thoughts?