Php - unable to carry over _GET from previous url

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PHP

Alright so here is my ONLY problem. For some reason the URL does not carry over the "gets" but it DOES carry over the POST information. The main line that's a problem here is "http://www.mywebsite.com/resetpass.php?email=$email&hash=$hash&password=$password" when the website loads all you get is: http://www.mywebsite.com/resetpass.php?email=&hash=&password=PASSWORDWORKS

I'm also afraid of the security for this process but it is very complicated to do an under-laying system all on one php website

<form action="resetpass.php" id="form" method="post" name="form">
New Password: <input type="text" name="password"><br>
Confirm Password: <input type="text" name="confirm"><br>
<input type="submit" name="submit" value="Change Password">
</form>

<?php

//no way to hide pass in link for this part?
if(isset($_POST['submit']))
{
    $password = $_POST['password'];
    $confirm = $_POST['confirm'];
    if ($password == $confirm && !empty($password) && !empty($confirm))
    {
        $hash = $_GET['hash'];
        $email = $_GET['email'];
        //echo "<script>document.location.href=resetpass.php?email=".$email."&hash=".$hash."&password=".$password."</script>";
        header("Location: http://www.mywebsite.com/resetpass.php?email=$email&hash=$hash&password=$password");
        //header("Location: http://www.mywebsite.com/resetpass.php?email=".$email."&hash=".$hash."&password=".$password);
        exit;
    }
    else
    {
        echo('Passwords do not match!<br/>Go back and try again.');
    }
}
?>

What I have tried:

I just threw "get's" all over the place and commented out urls as alternative methods. to see if it would pick up the values at some point but for some reason it never carries no matter what i do. What's missing?