I have a circular bruise with a white center (just skin colored) & the skin colored center is a knot. I saw other similar questions but they all said they didn't know how the bruise got there. The bruise is on my outer forearm very close to my wrist bone. I had trauma to the area and it was sore after the trauma. Almost a sharp pain right where the knot has now shown up. The whole thing was swollen now it's just the knot in the center that is swollen. Do you think maybe a small fracture or chipped bone? Or maybe something more minor? Is it necessary to go to a doctor?