This happens to me every time I successfully DEILD. And the annoying thing is that you can't possibly know.

One time I even decided to get out of my bed when this happened and I realized that I was not actually in my physical bed I was just dreaming that I was DEILDING..
And one time when this was happening and I just ended the experience because I was by then actually in my physical bed.

So with that in mind, I usually choose to stay in bed and not take the risk.