I had tympanoplasty 9 days ago. Everything seemed fine until today I was driving and cranked my neck to reverse. There was a pop in my ear, and I felt like the packing moved and I could hear clearly. I shoved the cotton back in. The popping happened again as was walking back into my apartment. Does this mean the grapht failed? I pushed the cotton back in and it's back to the muffled feeling now.