Hi, I had gone through your question and understand your concerns. Hematoma after finger injury, even if there is no fracture may persist for up to 2 months,especially if there was tendon or ligament injury. I think that you should apply heparin ointment, rest, and take painkillers. In cases of pain or limited motions you should have cast immobilization applied. If pain and hematoma persist for more than 2 months it would be good to have MRI scan to see if tendons or capsule or unnoticed fracture are present since prolonges symptoms may suggest something of it. But in most cases it subsides spontaneously. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. Wishing you good health.