Hi, Thanks for using HCM.
The symptoms suggest there is injury
at your extensors. Since there was slight swelling get one xray done to rule out any fracture
. It may be due to fracture or sprain
as both presents as pain and swelling. Now restrict any movements, take analgesic
(NSAIDs) and consult your doctor for examination and management according to diagnosis.
Hope I answered your question. Feel free to ask me if you have any further queries.
Wish you good health. Take care.