Hi and thanks for the query,
I think this should be an inflammation certainly due to the traumatic activity. I do not think you really need to be alarmed. It would be appropriate to maintain some good hygiene around the area and keep it dry. Simple analgesics for a start of associating them with non steroidal anti inflammatory drugs initially could be sufficient. In case the wound is really too large, a simple broad spectrum anti biotic for a few days could be helpful. Consulting your primary care
physician could help if you think it deserves some dressing or its really that big.
Hope this helps and best regards,