I totally get what you mean. It lasted for about an hour and I was literally 'floating' around and was apparently looking at things in a strange way.

I have never experienced that before. Never for such a period of time. I was really panicking.
It is not like I was still anxious from what I dreamt, because I knew I was dreaming as soon as I woke up... I guess? I was anxious because when I stood up, it felt so abnormal.

I read somewhere about chest pain? I woke up that morning with a pain in my chest and I never get such pains... headaches, stomach aches and other such things do not happen very often.