question: I hit my head yesterday.  I have a headache still; it gets worse with movement.  I'm also dizzy, off-balance when I walk, and feel nauseous when I move too quickly.  I haven't been to my doctor, but I am a nurse and I am scheduled to work tonight.  I am having some concentration difficulties and wondering if I should go to my doctor for an excuse for work, or if I should just push through and hope for the best.