I was about to do a shot a few weeks ago and dropped my syringe with the needles uncapped and it fell on my bed. I was kinda worried the needle was dirty and not having any other needles I decided to just put a flame to the needles for a few seconds thinking the heat would kill any bacteria. The problem is I guess there was some carbon left on the needle and now I have a black spot where I shot up, 2 actually. Kinda like a tiny little tattoo. Its been a few weeks and the spot are still exactly the same. So am I stuck with the spot or can I make it go away somehow?