That is a great question and one that should be best answered by your primary care doctor
or an emergency physician. From what you have described, it sounds like you had an injury to a blood vessel in your wrist which has caused some bleeding
and bruising in your wrist and hand. If you do not have any issues with blood clotting and you are not losing function or sensation in your hand, then it is likely that the blood clot has stabilized and will slowly resorb in your wrist over time. On the other hand, if you start to develop weakness, numbness, or tingling
in your hand or if the clot appears to be growing then you should be evaluated as soon as possible as this can become a medical emergency which requires urgent evaluation and possible treatment. You can consider applying pressure, applying a heat or ice pack to the area, and raising your hand up to get blood to flow back to the heart as means of decreasing the bruising and clot formation but again, if it gets worse, it is very important that you get evaluated as soon as possible by an emergency doctor.