Hi, I bruised my the nail on my big toe 2 days ago. It was extremely painful, and the nail instantly turned black and blue. The next day, the bruised color remained, and I continued to ice the toe. The following day, the nail was still bruised but after playing tennis for a few hours, my nail was no longer bruised but white. My toe is still sore though. My athletic trainer on the day my toe was injured said that the bruised nail would last a few weeks or months. Should I be concerned that it changed colors within hours?