Don't ask why, and if you can explain why please do in the comments, but had to do something like this:
$posts_date = $post->post_date;
$two_days_ago = strtotime(date('Y-m-d H:i:s') . ' -2 day');
if ($posts_date >(date('Y-m-d H:i:s', $two_days_ago))) :
//process code
endif;