*Dragon in my dreams?!!?

I'm curious about a dream I had a few months ago, it's the most vivid dream I've ever had in my life. I was in a market/bazaar, something out of the middle or dark ages because there were dirt roads and people were pulling carts. I was with a group of people when all of a sudden villagers started screaming. I turned to look and saw masses of people running and fires everywhere. I could hear something roaring and I looked up to see a dragon flying in the sky, spitting fire at everything. For some reason I ran to the tallest tower, even though my friends were trying to hold me back. I ran up the spiral staircase to the roof. The dragon flew over to me, it was huge, a deep azure blue color with spikes all over its head and running along its back. The dragon glided so close to me, within 3 feet of my face. I remember looking into one of it's huge golden-yellow eyes for a few long seconds, like it was happening in slow-mo, then it abruptly flew away. I never said a word throughout the dream. I also had another dream with a dragon in a large lake, this one vaguer, the dream occurred about seven years ago. Does anyone have any ideas about the meaning behind it? I'm not expecting to find much, but anything you might offer would be very welcome. Thanks.