My port has flipped for the second time. My original surgury was in July 2009. The first port flipped before my first fill. the second port flipped after I had my first very small fill. Now over one year since the original surgury I am scheduled for the port to be changed again. This time the doctor wants to relocate the port to the bottom of my sternum and use an old metal port. I am very concerned. Has anyone had a similar experience?