2006 Ford Fusion fuel cap light

My fuel cap light has been on for about 5 days now. I noticed that my cap was not on about that same time. Since then I have filled up and have kept a watch on the light. I was told at the dealer that the cap should reseat itself once the cap was put on properly (I went just before my warrenty was up) and I restarted about 4 to 5 times. Well its been serveral times since I have restarted and the light is still on and my warrenty is over. Do you think it might be the gas cap that I need a new one? I uploaded the picture and made a small donation so if you could anwser I would appreciate it. I can't tell where it is.