I just notised the other day that I had this bruse on my arm right below my hand. It's quite big with a bump in the middle. The bruise is a red/brown color with a bump the color of my skin. I asked the athletic derector of my school about this and he was not sure, since there is not much pain. I also have some friends who said I should go have it looked at. I just want to know what you think first.