Anyone ever have a popping feeling in your neck afterwards? Sort of like when your knees pop..?

I had my whole thyroid removed 3 or 4 years ago..Then I had a tumor removed in Janurary....I'm not sure if I had this popping thing going on before Janurary or not... but I know I've had it since Janurary atleast. It's not painful or a big deal, when I move my neck fast or all the way to the right... it just pops. Not all the time, but atleast once a day. I feel it sometimes when I burp too.

I called my dr a few months ago, left a message and he caleld back and my mom answered, said it wasn't anything to worry about.. But still... is it common? And what the heck is it. =/