Welcome to HCM.
Don;t worry.It will heal within 7 to 10 days.
Take proper care for it.
Do regular cleaning with anti septic liquid and apply antibiotic cream.Apply proper bandage on it to cover.
Start antibiotic like amoxy/cloxa to prevent infection and NSAID
like diclo/para or ibu/para to subside pain and swelling.
Intra muscular injection of tetanus
Take all this medicines with some food or with mlik.
Keep in touch with your doctor.