Even at six months post-op you have some continued healing and adjusting to do. It is easy to irritate the wrap site, and when that happens, reflux is mimicked. This can be caused by eating lots of raw veggies or salad, or spices, alcohol, acidic foods...you name it. Also, if you've got a tight wrap, you can get some food sitting at the wrap site that can irritate and feel just like reflux.
During the first couple years I'd get my wrap irritated quite often, but as time has gone on, it has become much more rare. It just takes time for your upper GI tract to adjust to the changes that have been made.
I wouldn't worry a bit. Just baby your wrap for a while, and things will feel better in time.
Nissen Fundoplication 2/09
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”