A matter of odds... the odds are HIGH, very HIGH that your ex will contact you, especially if you dated for longer than a year or so..
My ex called or emailed me a couple times. The first couple of times, I had that confused, "Oh, maybe she wants me back" syndrom going... she most recently sent me a text three weeks ago, and no confusion or false hope jumped in my head... this is kind of where you truly realize you are doing good, and you are moving forward!