Hi, I am 23 years old and I noticed that the right side of my left wrist seemed a bit tender. The next day it seemed like i had a light red circle on it..that night i could see a bruise around the red circle..fast forward 2 days and now there is an oval bruise about 2 1/2 inches long with the light red circle inside about 1 1/2 inches..what could this be and why is it progressivly growing? Thank you for your help!