The other day I noticed that my thumb was sore and kind of swollen around noon, but I paid no attention to it. Then, around 2:45, I looked at my thumb and there was this pretty large, swollen, black and blue lump at the base of my thumb, the entire thumb was swollen, and it just ached like crazy. Do you think I could have broken my thumb? My brother had these same symptoms a few years ago and it turned out he had chipped a bone. What do you suggest?