My phone is listening to me..scary.

So, I knew for q while they listen to you. But recently I've noticed that when I say something ( example , little Caesars ) I will get an as for it on facebook. This Is not a coincidence. One time, I was thinking about a snickers bar , never searched it on anything. Or even said it. But I got an ad on facebook for a snicker bar !!! Am I the only one??