Believe it or not your ex is doing you a favour by ignoring you - if he really is a nice guy you will be friends eventually, but if he'd agreed to meet up with you while you're like this it would have only made it all worse. Pretend he's disappeared off the planet for the next few months, and concentrate on stuff that doesn't involve boys. Go out lots with friends. You don't need a boyfriend all the time to be happy in life (if you do you need help). Girl power etc.
Having said that, a random pull might help as a temporary reassertion of your attractiveness to the opposite sex. Be very careful with this course of action though, and don't do it if you're the sort of person who gets attached easily.