Am I a schizophrenic?

For awhile I just thought it was something that'd go away until I looked up what I was experiencing on google. I don't hear "voices" exactly. I hear things that are not there all the time. An example would be hearing a scream in a movie, and randomly the memory of that scream, you can hear it and it feels and sounds like the original scream. I wouldn't consider myself mentally unstable, but i often find it's really hard to think and my mind slips into this state of being depressed and confused for no valid reason. I wouldn't consider myself stupid either, nor a genius, but I dont know I feel like if I accepted the fact that I had this disease it would limit me. I dont know how to explain it, i just need help