I do the same thing, it seems as if exactly when I gain consciousness in my dream that i just can sense that I am in one. I usually just jump up and fly to where I want to be when that happens because i'll just be zapped to some random place i've never seen or thought of before, to my knowledge. Maybe some symbolic thing for me. I've also had maybe 2 or 3 deja vu LD's when I was younger.