Oh! Im so sorry.. Sami did that to me the other day jumped right out of my arms and hit the dinning room chair (oak) he cried and stopped, I kept my eye on him ridden with guilt, but he was ok, I think maybe your baby might have bruised a muscle? let him rest and see how he walks and if he limps or drags it then I would say take him in, you will know.. please let us know how he is doing?