About 6 days ago I had dermal fillers injected to my chin. I’m on NSAID and eat omega 3 supplements. The next day I noticed a blueish dark spot that’s still present 6 days later without any improvement. When I range my chin it forms a dent just the shape of the spot. It looks a lot like an acne scar. Could it be possible skin necrosis or is it just a bruise? The nurse who performed the injections told me it was just bruising, No pain or swelling except the first 1-2 days.