It happened to me again last night where I was dreaming and there were several people around me. I was screaming at the top of my lungs "WAKE UP WAKE UP, we are dreaming!" And I still didn't manage to become lucid. This is such a strange and new issue for me as I've been lucid dreaming spontaneously all my life, and now all of a sudden I feel I'm being blocked as I dream even as I'm doing reality checks in my sleep etc...