You have too many things to be handled safely at home. Since you have been on warfarin
, so possibility of bleeding inside or outside the skull following the head injury
is a strong possibility. That need to be evaluated by a doctor and some scans may be needed. The warfarin, as you may be knowing, prevents the early clotting of blood which is required following an injury. If injury is inside skull and blood keeps leaking then it creates pressure on the brain and serious consequences may occur. So do get evaluated.