Is It Normal for Your Belly Button to Close Up After a Tummy Tuck, and Can It Be Fixed?

Had full tummy tuck a year ago and have had belly button issues since. My dr. seems uncertain as to what to do. I was not overweight prior to surgey. When he tried to correct in Dec., he could definitely see a belly button inside. The correction did not work, and my bb closed up again. I tried using a marble and golf tee, but did not work. In the last week my bb blew up like a balloon and then popped. I assume this is because I have a hole that needs to breathe but can't. Any suggestions?