Contunuing from old scene

Here is my script:

    function Update()
    Application.LoadLevel("Pause menu");

My problem is when loading a new scene it just creates a new first person controller and restarts me instead of continuing from the original. and it keeps doing this every time i reload the pause menu until it lags like crazy. so how do i destroy the old one and only use the one that isnt destroyed?

Add this C# script to that gameobject and get rid of the DontDestroyOnLoad(gameObject);

using UnityEngine;
using System.Collections;

public class DontDestroyScript : MonoBehaviour {
	public static bool created = false;	

	void Awake() {
    	if (!created) {
      	  created = true;
		else {

Someone else made a script like this on here that I referenced. Should work.