Nissen surgery for GERD, now swallowing issues. Anyone else?

So I had my Nissan surgery about a year and a half ago now I experience hard time swallowing periodically like every six seven months I have to go in and get my esophagus stretched I feel like my doctor thinks I'm nuts or something but I really panic when it happens cuz it's very uncomfortable anyone else have these troubles other than that I'm doing okay other than slight burping