I also had something like you Trancedence some time ago when trying to wild. It was 11pm when i started WILDing. I tried to be like spectator so anything that came i should just ignore and stay awake. I heard some screaming. It sounded like neutral scream. It wasn't scary or pleasant. I just kept laying in my bed passively and trying not to fall asleep.
Then i finally got in state that felt like i no longer existed. Like i had turned into stone or something that just is and stays the same. Finally i came conscious and i realised i had not sleeped at all. I had no idea how long i had been like that and i was really suprised when it was already 4am. I then went sleep little scared because i had to wake up early. But when i woke up i felt refreshed and not tired at all.