Route access prevention by initial referrer - Laravel

I'm trying to prevent access to pages on my website like password reset link and reset password etc if the user did not first go to a certain page. That is if page initial referrer of page X is not page Y then prevent access with something like abort(404).

How can I get the initial referrer url of a request and check it against a url in laravel 5

I've tried the below but it's not working;

$referer = Request::header('referer');

if ($referer != "http://ift.tt/1O7juJq") {
    return redirect()->route('/');
} 

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