@Wetrix @TheDoctor
It's kinda normal to hear sounds when you fall asleep. I sometimes listen to voices arguing, laughing etc. for a couple of minutes. Funny, most of their words don't make any sense. There is even a term for that, but I forgot it.

From this page:
https://www.webmd.com/schizophrenia/auditory-hallucinations

Mental illness is one of the more common causes of auditory hallucinations, but there are a lot of other reasons, including: