Symptoms Have Been Present For A While Now But For

Symptoms have been present for a while now but for the last few months have been increasing very much. Hearing voices mostly just calling me, depression, seeing things that I know aren't there and when I take a second look at them they're gone, jitters, I talk to myself too often, violent thoughts extreme and usually accompanied by me realizing that I've been staring at the groung smiling. This last symptom is not a joke and has been happening more recently and I'm started to be scared of myself. I know I wouldn't actually do anything but it's happening more often and I don't know what to do.