I hit the back of my head when I fell off a 3 foot step 3 days ago and still ahve a headache is this normal Hi, I fell off a structure when I was doing window displays (about 4 feet off the ground) and hit the back of my head on the stairs. I felt fine, just a bit of a headache, but continued on my with my day. Since then I have continued to have a headache. Is that normal or should I head to my doctors office? Thanks!