last night i had a very strange dream: i woke up with some images of it but i couldn’t see clear what happened. in that feelings i remember i used fire, like use magic. that was one of my lucid dream goals?! but it wasnt really a lucid dream i think, because i wasnt aware, at least i dont remember anything, only the fire.
how can this be possible/happen, is this a sign that my first LD is coming or not? 
My opinion is that you incubated a dream about fire because you had been thinking about LDs and your goals while awake.
So if this is breaking into your dream, it’s possible that the thought “Could this be a dream?” could too. 