I hit my head, please read?

I hit the front of my head above my forehead 5 minutes ago on a wooden surface (window sill) moderately hard and saw the color blue for a split second before it went away. I have an extremely mild headache now. Please note: I did not lose consciousness, I am not vomiting or seeing colors anymore, no stroke symptoms, no altered mental state, etc. I do have a mild headache however, and at one point some mild pain behind my left eye, but no otrher symptoms. I am not dizzy and can walk fine. What concerned me was the brief flash of blue. Should i go to the doctors?