Raycast Pause Between Hits?

When the Mouse Button is spammed the raycast hits multiple times instead of waiting till the animation is done any ideas??

 #pragma strict
 
 var TheDamage = 200;
 var Effect : Transform;
 function Update () {
    
 Hit();
 
 }
 function Hit() {
 
 if (Input.GetMouseButtonDown(0))
 {
 
 
 var hit : RaycastHit;
 
 var pos = Vector3(Screen.width / 2, Screen.height / 2, Camera.main.nearClipPlane);
  
    
    var ray = Camera.main.ScreenPointToRay(pos);
   animation.Play("Axe");
 if (Physics.Raycast(ray, hit, 5))
 
 {
 yield WaitForSeconds(0.4);
 var particalClone = Instantiate(Effect, hit.point, Quaternion.LookRotation(Vector3.up, hit.normal));
 
 Destroy (particalClone.gameObject, 0.5);
 
 hit.transform.SendMessage("ApplyDammage", TheDamage, SendMessageOptions.DontRequireReceiver);
 
 }
 
 
 
      
      
      }
       yield WaitForSeconds(3);
 }