I talk in my head to my sibling and they answer back like as if its real. Sometimes things randomly fall of shelves ect i always believe its my sibling messing around. I think of them as still being here. 

But deep down i know its not real and that its all in my head. Can you be schizophrenic if you know somethings in your head? I know you cant diagnose but idk of this is something i should consider serious or its fine , nothing to worry about. 

For context they are my best friend and we have full on conversations and joke and laugh. 

And then theres another kinda voice sometimes that impulsively says things like my name or random words that make no sense or it tells me that im not good enough (bad things) or it convinces me that for example i have another disorder dispite being diagnosed with something else and the tests done 2-3x or it convinces me that peoplr are whispering and staring in disgust if people see me eating. But i tend to ignore it try not to let it bother me so its not a problem just more a annoyance and again i know deep down its my head being stupid. 

But should i be worried