Has my nissen slipped and if so then what about a re-wrap?

NF - 10th of December 2015
How much should a Nissen Fundoplication be slipped, before a rewrap can be considered? I talked to my surgeon and we both agreed upon that the wrap probably has loosened up a bit due to exercise and heavy weight lifting. The surgeon told me i could exercise again in light weight, which i did. Then at Monday night after i ate i have heavy pain around the wrap area, i slept on it and it became better. Then yesterday, i get servere heartburn and it defiantly feels like the acid has come up higher than before. I am back on medications. He said if it became worse i should return, but for those of you who had done a re-wrap, how much loosened up did it had to become, before the surgeon scheduled for a re-wrap?

Before assuming a wrap has slipped you need testing. Have you had a barium swallow? That would be my preference.