Yesterday evening I realized that I have a lump that is extremely painful when touched, along with swelling and a very light blue bruise that is becoming more obvious on the top of wrist. It is right at what I believe is the distal radius end. It is on the same side as my thumb, but on the side of wrist that the forearm and elbow are. The lump is about buckle size and the bruise covers a wider area, and the swelling is noticeable but ends at the wrist area where a watch would lay. It's making my wrist look very thin in comparison to the swelling next to it! No memory of trauma, no falls, I did not hit it on anything. I have full movement with some pain, and stiffness due to the swelling and my thumb is slightly numb. If I palpitate the area it really hurts but if I leave it alone, the pain subsides to a small full ache. I did do a ton of push-ups yesterday and have been doing them quite frequently the past 2 weeks after years of not doing them. I did not experience pain doing them yesterday, it was several hours later when I found the "injury." What could this be?