This isn't the first time this has happened, so bear with me.
This morning I woke up and heard a person whistling, sounded like just outside my bedroom door, definetly in the house, I knew that I must have been hearing it and eventually it stopped after what seemed like a good length of time.
This has happened before, its usually a voice or a noise and can happen any time, last time I was in the shower. I usually know its not real and it only happens months apart.
Im under a bit of stress just now and it only seems to happen when im particularly stressed.
Is this anything to worry about or can I just ignore as its infrequent?