Finding it hard to realize that I am dreaming?

Date: 6/30/2016

As a person, I often to have dreams a lot but I don't remember them (of course), which is totally normal. I also have weird visions sometimes in my dream and forget it when I wake up but soon remember it when that "dream" or vision comes up in an actual event. But this is not the case. When I have dreams, I am not in FULLY in the dream. Now, it may not make sense but let me explain further. A dream I had the other day is when I was on a school trip and we were staying on the mountain but most people went to take an elevator, all the way down to a beach? While I was taking the elevator down with one of my real life friends, my top was open. I was bra-less and my boobs were just hanging out. But when that happened, I saw myself as a 3rd person view. I knew I was dreaming but I couldn't control what I was doing or myself (the one naked) couldn't tell it was a dream or not. I am not sure if my dreams are even lucid or not. I'm just very confused about this and why it's happening to me and why not to everybody?