So, I've had auditory hallucinations before, but not for years and years. Close to ten years. But never a voice.
So, this morning I'm taking my shower. I had my back to the curtain. All of a sudden over my right shoulder, from outside the curtain someone whispers very loudly "Hey!"

It was a loud whisper, like if someone was sneaking up trying to scare me. I screamed because everyone is asleep. I peeked out of the curtain. No one there.
I know it wasn't my husband's voice. I didn't hear the bathroom door open or close. No footsteps. If it had been my husband he would laugh. He likes to joke around, so if he scares you he is going to laugh, not run and hide. It was a male voice, though....
Scared me to death... Hopefully that's it and not a bad sign....