If there is no open wound, then I do not feel that antibiotics would be necessary. The same goes for antiseptic ointments as well. But if there is an open wound, then both are must. Also do check your tetanus status. Hope you have got it by now. You should ideally take it within 24 hours of injury. Consult an orthopedician to see if there is any cervical dislocation, in that case you shall need to use a collar and/or a shoulder strap to minimize pressure over the neck.