Paranoia Support Group
Paranoia is a disturbed thought process characterized by excessive anxiety or fear, often to the point of irrationality and delusion. It is often associated with psychotic illnesses, sometimes schizophrenia, although attenuated features may be present in other primarily non-psychotic diagnoses, such as paranoid personality disorder and obsessive compulsive disorder.
None of these things can hurt me--though they make me anxious! Consider that you might have a problem with auditory hallucinations and consult a doctor...
But technically you COULD have been dreaming that first time and the second time the toy could have been long perched precariously and just finally slid down enough to make a sound.
There's probably a logical explanation! And if not just keep telling yourself there is! ;) See a therapist and get this all out if you can!
Hang in there!