End your bath in the cold basin. Perform this procedure one to two times per day. The contrast of hot-cold creates a pumping of the blood in and out of the body part. The blood vessels dilate in the heat and constrict in the cold. Any stagnating swelling is reduced as it is pumped out of the body part.
Inflammation is reduced as fresh blood and healing agents are pumped into the injured area.
Pain is also reduced, as both hot and cold have anesthetic effects. Give it a try . If symptoms don't improve in a few days get checked by a physician. Remember, contrast baths may help in healing, but doesn't effect the cause of injury. Perhaps your playing posture should be evaluated by an experienced health professional.