Hello dear, The symptoms can be attributed to inflammatory response & accumulation of fluid and blood (hematoma). The blood cells accumulated are eventually broken down and absorbed in the body. But this is a slow process & takes times to disappear completely. Till that time, symptomatic relief is obtained by taking analgesics like Diclofenac+ Serratiopeptidase preparations, ice compression & adequate rest. Multivitamin & multimineral supplements like Iron, Vitamin B 12, Calcium, etc. need to be added to your diet. If it still persists or there are any other associated symptoms like vomiting, fever, loss of consciousness, convulsions, etc...then it will be better to consult your Doctor. There is no need to worry, you will be fine. Meanwhile, maintain adequate hydration, take a healthy balanced diet & avoid stress. Also, take precautions of not making sudden movements of the head and get up from bed slowly. Wishing you a good health. Take care.