I have a 14 month who fell and but the corner of a piece of wooden furniture at first it indented for a minute then got a Gooose egg. It was his left part of his foreheadHe cried a little and then was fine no neurological symptoms. This was three weeks ago. It turned Purple then yellow and never broke the skin. However I still feel a small bump under the skin and when he smiles there is a small dimple. Will this go away. Should I worry