Cannula marks after breast filler. What could this be? Are they scars?

I have undergone the breast filler procedure which has left me with dark pinkish almost shiny like marks about 1mm in size were the cannula was inserted by each nipple. The marks are still present, the person I went to was not much help. Please could someone help identify what this might be? It was under 6 months ago but this was not a surgery. The marks also look like they may be pitted but it is difficult to tell. I'm anxious they are scars