you may have sustained a soft tissue or ligament injury. this would not likely show up on an x-ray assuming you had one after the original injury. if you are still having finger pain two months after an injury this is not considered to be normal. it would be in your best interest to see a medical provider orthopedist or hand specialist so you can be properly examined.
2 months ago i jammed my finger. still hurts when bent back & dont have full range of motion. what may the probelm be?