What could be causing pain after I felt columella strut graft move?

I felt my nose graft move, now I feel pain - 5 years ago, I had a columella strut graft (made from cadaver cartilage) placed in my nose in order to increase projection. Recently, I wiped the side of my mouth with my hand, and in doing so, I felt the graft move for a moment, which caused pain. My surgeon said it looks fine, but I still feel pain in the region circled in the picture, especially when I look downward. What could be causing the pain? Thanks in advance!