Having trouble with paranoid schizophrenia help!?

it's just constant negative voices and messages in my head.Even through small things that people do i think they are against me or ALWAYS trying to bring me down.The voices in my head just reinforces the negativity in my mind and just nakes me so wary of people and things ALL the time.Is it normal to get delusions about people that aren't there and form opinions that arent true through your paranoia ?