Is A Small Bump On Forehead Of An Infant Post Banging The Head A Cause For Concern?

My 9 month old was sitting in his chair and hit his forehead on the edge of the dining room table. He has a small bump and cried right after. The bump is right above the bridge of his nose should i take him to the Dr or ER? He was awake for about 30 minutes after the fall and now he is taking a nap.