I recently bought a a pink caviar classic flap from my local Neiman Marcus. It was a return, and my NM doesnt normally carry chanel. I was reading about the stories where sometimes people switch fake bags and return them....... On my bag's hologram sticker, the left side is not a thick black purplish color line but instead is a thin blackish color. And some of my thread is coming undone already. Could mine possibly be a fake?